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By the Peanutbean parent · checked against CDC, NHS and AAP guidance · how we fact-check

When do babies sleep through the night?

Last verified: July 17, 2026

The short answer: there is no single age when babies start sleeping through the night, and the phrase itself is more misleading than most parents realise. Night feeds usually become optional somewhere between 3 and 6 months for many babies, but plenty of healthy babies keep waking well beyond that, and pediatric guidance actually treats frequent brief waking as normal and even healthy, not a problem to solve.

What “sleeping through the night” actually means

It rarely means what it sounds like. Even once babies stop needing night feeds, most still wake between sleep cycles. The real skill is not staying asleep for 10 or 12 hours straight, it is being able to settle back down without needing you every time. The AAP puts it plainly: a good sleeper is a baby who wakes frequently but can get themself back to sleep, not a baby who sleeps undisturbed all night. At this age, sleeping without waking for long stretches is not actually the healthy pattern, since frequent waking helps a baby rouse if they are not getting enough oxygen or are having trouble breathing (AAP: Sleeping Through the Night).

That reframe matters. If your 4-month-old is waking twice a night and resettling with a feed or a cuddle, that is not a sign anything is wrong. For the total number of hours babies sleep at each age, our guide to baby sleep by age has the full breakdown.

When night feeds usually ease off

Newborns wake at night mainly because they need to feed, and because they get too hot or too cold (NHS: Helping your baby to sleep). As babies grow, they typically need fewer night feeds and can stretch longer between them:

• 3 to 6 months: some babies start sleeping 5 to 8 hours or longer at a stretch overnight, though not all do.
• 6 months to a year: for some babies, night feeds are no longer necessary, and total sleep settles around 15 hours in 24, with most of it happening at night. Teething discomfort or hunger can still interrupt sleep during this stretch (NHS).

The AAP gives a rough check instead of a fixed age: healthy, growing babies usually do not need to be woken to feed, but it is worth checking with your pediatrician about night waking if your baby is not growing and gaining weight steadily, not feeding well (roughly 8 to 12 times a day if breastfeeding, or 5 to 8 times a day if bottle-fed or older), not having at least 4 wet nappies a day, or not having at least 3 normal bowel movements a day (AAP). If any of those signs are missing, that is the actual thing to raise with your pediatrician, not the waking itself.

What helps, without any tricks

Teach the difference between day and night from early on. During the day, keep curtains open, play normally, and do not tiptoe around household noise. At night, keep lights low, keep your voice quiet, and put your baby down as soon as they are fed and changed rather than lingering to play (NHS).

Help your baby learn to settle with a soothing routine, such as rocking, thumb or hand sucking, or non-nutritive sucking at the breast. One firm rule from the AAP: never put your baby to bed with a bottle for comfort. Milk pooling in the mouth overnight promotes tooth decay, and liquid can back up through the eustachian tubes and raise the risk of ear infections (AAP).

Respond to your baby during the day. Giving attention and comfort when your baby is awake will not spoil them or create bad habits. It actually helps them feel calm and secure, which makes settling at night easier over time (AAP).

Watch for tired cues before overtiredness sets in. An overtired baby is often harder, not easier, to settle. Learning your own baby’s early sleepy signs makes bedtime smoother (AAP).

A simple bedtime routine helps too: a bath, a fresh nappy and night clothes, a story, dim lighting, a goodnight cuddle, and maybe a lullaby. Doing roughly the same steps most nights, in the same order, signals that sleep is coming (NHS).

Share the load where you can. If you have a partner, take turns with night feeds and early morning changes so each of you gets a real stretch of sleep. If you are on your own, even a few nights of help from a friend or relative can make a real difference (NHS). If you are also navigating the tougher stretch around 4 months, our guide to weeks 8 to 17 covers what is really behind the so-called 4-month sleep regression.

When patterns change again

Expect sleep to shift as your baby grows. Growth spurts, teething, and illness can all disturb a settled pattern for a while, and that is normal too, not a step backward (NHS). If sleep problems are wearing you down, or you want more support building a routine, your health visitor is a good first call.

When to check in with your pediatrician

Beyond the feeding and growth checks above, mention it to your doctor if your baby seems unusually hard to console, if daytime behaviour or feeding is clearly off alongside the poor sleep, or if you are worried for any reason at all. As with everything else in this first year, your own concern counts as a reason to ask.

Keep reading

• Weeks 39 to 52: almost a toddler
• How much sleep does a baby actually need?
• Safe baby sleep: how to lower the risk of SIDS
• Waking up to the world (weeks 8 to 17)
• All the first-year windows

Sources

• NHS: Helping your baby to sleep (page last reviewed January 2025)
• AAP: Sleeping Through the Night (source: Sleep: What Every Parent Needs to Know, American Academy of Pediatrics)

Peanutbean provides general information for educational purposes only. It is not medical advice. Every baby develops at their own pace. Always talk to your pediatrician about your child’s health.