When do babies sleep through the night?
When do babies sleep through the night? Understanding infant sleep and night waking.
If you have found yourself searching “when do babies sleep through the night?” at 2 am, you are in very good company.
Usually, that question is not really about a developmental milestone. It is about being tired. It is about wondering whether your baby’s sleep is normal, whether you have somehow created the waking, and how much longer you can keep functioning on broken sleep.
The honest answer is that there is no single age when every baby suddenly starts sleeping from bedtime until morning. Some babies begin doing a longer stretch in the early months. Others continue waking for feeds or support well into the second half of their first year, and some toddlers still wake regularly.
That range can be hard to hear when you are exhausted, but it is important. A baby who is still waking is not automatically behind, and a parent who would like more sleep is not asking for too much.
What does “sleeping through the night” actually mean?
One of the reasons baby sleep advice can feel so confusing is that “sleeping through the night” does not always mean what parents think it means.
In research, it is often defined as sleeping for a continuous 6-8hour period. So, a baby who sleeps from 7pm-1am may technically be described as sleeping through the night, even though most parents would quite reasonably still consider that a wake-up in the middle of the night.
In everyday family life, sleeping through might mean different things. For one family, it could mean one feed and a quick resettle. For another, it could mean a baby sleeping from bedtime until morning without needing help.
Research also shows how varied this milestone really is. In a longitudinal study published in Pediatrics, between 27.9% and 57% of babies at 6 and 12 months did not sleep through the night when researchers used 6-8 hour definitions. In other words, not sleeping through at 6 months or even 12 months does not mean that your baby is failing to develop or that you have done something wrong.
When do babies usually start sleeping for longer stretches?
Newborns
Newborn sleep is not designed to be consolidated overnight. Tiny stomachs, immature circadian rhythms and the need for regular feeding mean that newborns commonly wake every few hours, during both the day and night.
Some newborns have an unexpectedly long stretch from time to time, but that is not the same as being ready to sleep through consistently. In the early weeks, responsive feeding and safe sleep remain the priority.
Around 3-6 Months
For some babies, the longest period of sleep begins to move towards the night during this stage. Their body clock is maturing, they may be taking in more milk during the day, and their sleep cycles are becoming a little more organised
That does not mean every baby will suddenly sleep for 10 or 12 hours. Many babies at this age still wake to feed, need help between sleep cycles or have periods of more unsettled sleep as they develop.
Around 6-12 Months
Some babies begin sleeping a longer first stretch at night during this period. Others continue to wake once or several times. Breastfed babies may still wake to feed, and many babies need additional reassurance during developmental changes, illness, teething, separation anxiety or periods of new movement.
It is also common for a baby who has slept well for a while to begin waking again. Sleep is developmental and changing; it is not a pass-or-fail test that a baby completes once and never revisits.
After 12 months
Night waking can still happen in toddlerhood. Toddlers are learning, communicating, separating, becoming more independent and experiencing big emotions. Their sleep can also be affected by nap transitions, illness, travel, childcare changes and their growing need for connection.
A toddler waking does not necessarily mean they are incapable of sleeping. It may mean that something about their current rhythm, settling pattern, environment or emotional needs needs a closer look.
Why is my baby still waking at night?
Babies wake for many different reasons, and it is rarely helpful to reduce every waking to a single “bad habit”. A baby might wake because they are hungry, uncomfortable, overtired, undertired, unwell, going through a developmental change or looking for the same support they had when they first fell asleep.
Sometimes there are several contributing factors at once.
A baby may be waking frequently because their daytime sleep is no longer matching their changing needs. Another baby may be waking because they are relying on feeding, rocking, movement or a parent’s presence to get back to sleep after a normal partial arousal between sleep cycles. A baby with reflux symptoms, eczema, congestion, allergies, pain or breathing difficulties may also be waking because sleep itself is uncomfortable.
This is why advice that works beautifully for one family can make another family feel even more confused. Sleep is influenced by age, temperament, feeding, health, development, daytime rhythm, sleep pressure, environment and the way a family naturally responds to their child.
Is it normal for babies to wake between sleep cycles?
Yes. Brief arousals between sleep cycles are a normal part of human sleep. Adults experience them too; we are just more likely to move through them without fully waking or needing another person’s help. Australian sleep guidance also recognises that babies may wake and need an adult to help them settle back to sleep.
https://raisingchildren.net.au/newborns/sleep/understanding-sleep/about-sleep
Babies have shorter sleep cycles and are still developing the ability to move from one cycle to the next. Some will resettle quietly. Others will call, cry, feed or look for the comfort that helps them feel safe enough to return to sleep.
Responding to your baby does not spoil them. Feeding to sleep is not a moral failure or proof that you have created a problem. Cuddling, rocking, patting and staying close are all valid ways of supporting a baby, particularly when they are young, unwell or going through a difficult period.
At the same time, something being normal does not mean you have to continue with a pattern that is no longer sustainable for your family. Parents matter too. Your need for rest is real, and it is possible to make thoughtful changes while remaining responsive to your baby.
Do babies need to stop feeding at night before they can sleep through?
Not necessarily. Some babies naturally reduce their night feeds as their intake during the day increases. Others continue to breastfeed overnight for longer, and that can be an important part of their nutrition, comfort and connection.
Whether night feeds are still needed depends on your baby’s age, growth, feeding history and individual circumstances. If you are considering reducing or removing night feeds, it is important to discuss this with your GP, child health nurse or another appropriate health professional. Particularly if your baby is young, premature, has feeding concerns or is not gaining weight as expected.
There is also no requirement to stop breastfeeding in order to improve sleep. For some families, feeding remains part of the bedtime and overnight rhythm. For others, the parent may be ready to gently change how their child settles. Both choices can be approached respectfully.
Does sleep training mean leaving a baby to cry?
No. Sleep support is not one single method, and it does not have to mean cry-it-out.
At The Sleep Sanctuary, I do not use cry-it-out and I will never ask you to follow a method that feels wrong for your family. I believe sleep support should be grounded in empathy, evidence and a realistic understanding of your child. Not in pressure, fear or a promise that every baby should sleep exactly the same way.
There are many ways to support sleep. Some families prefer a very gradual approach with a parent remaining close and reducing support slowly over time. Others are comfortable with a clearer boundary and more structured settling, while still responding to their child and offering reassurance. Many families sit somewhere in between.
The most appropriate approach depends on your baby’s age, temperament, current sleep patterns, feeding, developmental stage, your level of exhaustion and what you feel comfortable doing. Your parenting style matters. Your family’s circumstances matter. Daycare, shift work, older children, twins, breastfeeding, co-sleeping history, illness and parental capacity can all affect what is realistic.
There is no prize for choosing the hardest approach. The aim is to find a plan that is kind, clear and sustainable enough for you to follow consistently.
When should I seek help with my baby’s sleep?
You do not need to wait until sleep is at its worst before asking for support. It may be worth getting help if:
- Your baby is waking hourly or taking a long time to resettle
- Bedtime has become stressful or is taking a significant part of the evening
- You are feeling anxious, resentful or unable to function because of the broken sleep
- Naps, early rising or bedtime are affecting the whole family
- You have tried several pieces of advice and nothing seems to fit your baby
- You want to change a settling pattern but do not know where to begin
Before making changes, speak with your GP or child health nurse if you are concerned about poor weight gain, feeding, persistent pain, vomiting, breathing pauses, loud snoring, laboured breathing, unusual sweating during sleep or any other symptom that may suggest a medical issue. A sleep plan cannot replace medical assessment.
What I look at when helping a baby sleep for longer
When a family comes to me, I am not looking only at the time their baby goes to bed or whether they can self-settle. I want to understand the whole picture.
That includes your baby’s age and temperament, total sleep across 24 hours, nap timing, wake periods, feeding and growth, bedtime, sleep environment, night waking pattern and what happens when they wake. I also want to understand what you have already tried, what is and is not working, and what you can realistically manage in your home.
From there, I can help you work out whether your baby is waking because of genuine developmental or feeding needs, a timing issue, a settling association, discomfort, a change in routine, or a combination of factors.
The goal is not to force a baby into an unrealistic schedule. It is to build a clear, age-appropriate plan that supports more settled sleep while respecting your relationship with your child.
Personalised baby sleep support across Australia
My Classic Sleep Support Package is my most comprehensive option for families with babies and children from 4 months to 5 years. It includes a one-hour phone consultation, a personalised written sleep plan, two suitable gentle settling approaches for you to choose from, and 14 days of follow-up support.
The consultation is Australia-wide and delivered by phone, so you do not need to live in Brisbane to work with me. Families across Brisbane, South East Queensland and throughout Australia can receive individualised guidance without being handed a generic schedule or pressured into cry-it-out.
I cannot promise that every baby will sleep for 12 uninterrupted hours, because babies are individuals and sleep is affected by development, health and life. What I can do is help you understand what is happening, identify the changes most likely to make a difference, and support you while you put a realistic plan into place.
If you are tired of Googling and feel ready to understand your own baby’s sleep, you can learn more about my Classic Sleep Support Package.
Not ready to book yet? You can also explore my evidence-based baby sleep guides and digital resources
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There is no universal age. Some babies sleep a longer stretch in the early months, while others continue waking for feeds or support beyond 12 months. A baby’s age is only one part of the picture.
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Yes. Many six-month-olds still wake overnight. Some wake to feed, while others need help moving between sleep cycles. Frequent waking can be normal, although you may still want support if it is exhausting or difficult to sustain.
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No. Breastfeeding and night waking are not the same thing, and there is no requirement to stop breastfeeding before supporting more settled sleep. Night feeds should be changed only when it is appropriate for your baby and family.
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Yes. There are responsive and gradual approaches that can support changes in settling and night waking without leaving a baby to cry alone. The right approach depends on your baby and your family’s preferences.
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This is common. Illness, teething, separation anxiety, developmental changes, nap transitions, travel and changes at home can all affect sleep. It does not mean you are back at the beginning or that your baby has forgotten how to sleep.
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Sleep consolidation develops at different rates. Research has not found that babies who sleep through earlier have better mental or psychomotor development. Longer sleep can be a meaningful goal for family wellbeing, but it is not a measure of a baby’s worth or development.