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Baby sleep month by month

How much a baby sleeps, why it wakes at night and what changes from month to month. No sleep training, no timetable.

Frequently asked questions

When do babies sleep through the night?

For infants, sleeping through usually means five to six hours in a row. Many babies get there at some point in the first year, some later. There is no fixed age.

How much sleep does a baby need?

About 14 to 17 hours a day in the first months, split into many portions. At one year it is roughly 11 to 14 hours. The range is wide.

What is the four-month sleep regression?

Around the fourth month, sleep matures and gets cycles like an adult. Babies temporarily wake more often. It is a developmental step, not a setback.