Is it normal for a 4-month-old to still wake at night?

Absolutely. Many 4-month-olds still wake once or twice — and around 4 months there's often a sleep regression that disrupts even babies who were starting to settle. Night waking is developmentally normal throughout infancy; it doesn't mean you're doing anything wrong.

Does breastfeeding delay sleeping through the night?

Breastfed babies do tend to wake a little more often on average, partly because breast milk digests faster. But the difference is smaller than people think, and many breastfed babies sleep long stretches just fine. Feeding method is one factor among many — temperament, weight, and sleep environment all matter too.

What helps babies sleep longer stretches?

A consistent, calming bedtime routine (bath, dim lights, feed, quiet time) helps signal that night is different from day. Putting baby down drowsy but still awake gives them practice settling independently. Beyond that, time is the biggest factor — most babies get there on their own timeline, with or without formal sleep training.

When Do Babies Sleep Through the Night?

One of the most common questions in those hazy early months is: when will my baby sleep through the night? The honest answer is that it varies a lot — and the wide range is completely normal.

What does “sleeping through the night” actually mean?

In baby-sleep circles, “sleeping through the night” usually means a continuous stretch of 5–6 hours — not necessarily 8 or 10 hours. So a baby who goes from 11 pm to 5 am has technically done it, even if it doesn’t feel that way to a tired parent.

Expecting an infant to sleep 8 straight hours is unrealistic for most of the first year. Babies have small stomachs, need frequent feeds, and have lighter, shorter sleep cycles than adults — night waking is biologically normal, not a sign of a problem.

When do most babies start sleeping longer?

When babies typically start longer stretches

0–6 wks

1–3 hrs at a time

6–12 wks

3–5 hrs stretches

3–4 mo

Some reach 5–6 hrs

4–6 mo

Many do 6–8 hrs

6+ mo

Most 8–12 hrs

Here’s a rough picture, keeping in mind there is no fixed age and a wide range is normal:

Age	What’s typical
0–3 months	Waking every 2–3 hours; sleep and wake are scattered around the clock
3–4 months	Some babies string together a 4–5 hour stretch; many still wake 2–3 times
4–6 months	Many (not all) start one longer stretch of 5–6 hours; sleep patterns consolidate
6–9 months	A growing number sleep 6+ hours; still common to have one night waking
9–12 months	Many sleep 6–8 hours; some do less — still within normal range

If your 3-month-old is still waking every 2–3 hours, you are in the normal range. If your 6-month-old is still waking once or twice, you are also in the normal range. Our baby sleep schedule tool can help you see what age-appropriate sleep totals look like for your baby right now.

What affects when a baby sleeps through?

Several things play a role:

Weight and feeding: Babies need to feed regularly to grow — lighter babies and those going through growth spurts genuinely need more night feeds. Most providers suggest that once a baby is gaining well and around the 5–6 kg (11–13 lb) mark, they have the physical capacity to go longer without a feed (though not all choose to).

Feeding method: Breast milk digests a little faster than formula, so breastfed babies may wake slightly more often on average. But plenty of breastfed babies sleep long stretches — feeding method is one factor, not a rule.

Temperament: Some babies are naturally better settlers. This is real and not something you did or didn’t do.

Sleep environment: A dark, quiet, slightly cool room, a consistent sleep spot, and white noise can all help. Read more about the foundations in our newborn sleep guide.

Sleep regressions: Around 4 months, many babies go through a developmental shift that disrupts sleep even if things were improving. This is temporary. See our 4-month sleep regression guide for what to expect.

What helps — without pressure

There’s no single right approach to baby sleep. Here are some things many families find helpful:

A consistent bedtime routine (bath → dim lights → feed → lullaby → crib) helps your baby’s brain learn that sleep is coming. Even a short 10–15 minute routine makes a difference.
Putting baby down drowsy but awake — at least sometimes — gives them early practice at settling without needing to be fully rocked or fed to sleep.
Distinguishing night from day: Keep night feeds quiet, calm and brief. Bright lights, play and stimulation belong to daytime.
Watching wake windows: Overtired babies often sleep worse, not better. Age-appropriate wake windows (time awake between naps) help avoid this.

If you want to try more structured sleep training, many evidence-based methods are available — but they’re a personal choice, not a requirement for good sleep. Many babies sleep well without any formal training, just with time and a gentle routine.

When does it start feeling manageable?

For most families, there’s a noticeable shift somewhere between 4 and 6 months — not overnight, but gradually. Night feeds become fewer. Wake-ups become shorter. You start to see more of a pattern. This is the typical arc, though some babies take longer and some get there sooner.

If night waking feels unsustainable, it’s absolutely okay to talk to your provider or a certified sleep consultant. You don’t have to white-knuckle your way through it.

“Sleeping through” means different things at different ages. Most babies get there between 4–6 months — but the range is wide, and waking at night at any age in the first year is biologically normal.

This article is for general information only and is not medical advice. Always follow your healthcare provider’s guidance.