3 months: why it feels like it’s getting easier

Things have genuinely got easier and you are afraid to say so out loud. The improvement is real. It is also, for many families, a lull - and this is a good month to put a few things in place.

4 min read

By three months, several things have settled at once. The body clock is running, so nights are longer than days. Feeding is more efficient, so feeds take less time and come further apart. The newborn fussiness that peaks around six weeks has usually passed. Wake windows have stretched to something that allows an actual conversation.

What has not happened yet is the change in sleep architecture that arrives around four months. Until then, babies still drop quickly into deep sleep and stay there, which is why a three-month-old can be transferred to a cot asleep and often stay asleep. That particular trick stops working shortly.

What is worth doing this month

What is coming

Around four months, sleep splits into cycles with brief surfacings between them, much like adult sleep. Babies who have always been put down asleep will start noticing the gap between how they fell asleep and where they wake up. This is why so many families describe a sudden collapse at four months, and it is a developmental step rather than a setback.

You cannot prevent it and you should not try. What helps is having the boring infrastructure already in place - consistent bedtime, dark room, sensible wake windows, some experience of falling asleep in the cot - so that when it arrives you are adjusting rather than starting from nothing.

Enjoy this month properly. Then put the dull things in place, because they are what carries you through the next one.

Rough expectations at three months

Fourteen to seventeen hours of sleep across twenty-four, with four or five hours of it in the day across three or four naps. Wake windows of about ninety minutes to two hours. A first night stretch of anywhere between four and seven hours, and one to three feeds after it. Enormous variation between babies, all of it normal.

Naps at this age are frequently short and frequently on a person. Neither is a problem to solve this month.

Practising the cot without making it a project

The most useful thing you can do this month takes about a minute a day. Once, at the easiest sleep, put your baby down while they are still awake - eyes opening and closing, not yet gone - and stay with them. Some days they will drift off. Most days at this age they will not, and you pick them up and do it the usual way.

That is the whole exercise. It is not sleep training and there is no expectation attached to it. The point is that when things get harder in six weeks, falling asleep in a cot is something your baby has done before rather than something entirely new being introduced during the worst fortnight of the year.

Getting the room right now

This is a good month to sort out the physical environment, because doing it while things are calm is much easier than doing it in the middle of a bad fortnight. Blackout that actually blocks light, a thermometer in the room, the temperature settled between sixteen and twenty degrees, and whatever noise arrangement you intend to keep.

It is also the point at which the cot setup is worth checking properly: mattress firm and flat, fitting with no gaps at the edges, nothing else in the cot, and nothing reachable from it. Setting all of this up now means one less variable when sleep gets harder in six weeks.

When to stop troubleshooting

Poor weight gain, feeding refusal, persistent inconsolable crying, snoring or noisy breathing during sleep, or a baby who has stopped doing things they were doing a month ago, are all worth raising with your health visitor or GP.

General guidance, not medical advice. Your paediatrician's advice takes precedence.