A bedtime routine works because it is boring and identical every night

Treat the sections below as a sequence. With bedtime routines, getting the early decisions right makes the later ones much easier.

What a routine is doing

A wind-down does not make a baby sleepy by itself; it tells the baby what is about to happen, which is a different and more achievable job. That signalling only works through repetition, so the same steps in the same order matter far more than which steps you chose.

This is why elaborate routines are no better than plain ones and are considerably harder to sustain on a difficult evening. It also explains why a routine takes a while to do anything, since a signal has to be learned before it can be read. Parents expecting an immediate effect usually abandon it before it has had the chance to become recognisable.

Keep it short

A routine that takes forty minutes will be skipped on the nights you most need it, which are exactly the nights that damage the pattern. Fifteen or twenty minutes is enough for a sequence to be distinctive, and shorter routines survive travel, illness and visitors far better. A bath is optional and is not required nightly in most guidance, though many households find it a useful marker.

On almost no sleep, two or three fixed elements in a fixed order does the same work as six, and one person can manage it alone. The test is whether an exhausted adult could complete it badly, because that is the version that will be running most weeks.

The order matters more than the content

Whatever the steps are, running them in the same sequence is what makes them legible, and reordering them removes most of the benefit. Moving from bright to dim, from active to still and from loud to quiet across the sequence is the pattern most routines share.

Ending in the room where the baby will sleep is worth doing, because the last step is the one most closely associated with what follows. Screens and bright light late in the sequence work against the direction you are trying to move in, which is a reasonable thing to avoid. None of this needs to be strict, and a routine that is roughly right every night beats one that is exactly right three times a week.

Everyone runs the same version

A routine that only one adult can perform is a routine that fails whenever that adult is out, which is a bad property for a nightly event. Writing the sequence down, however trivial it seems, means a partner, grandparent or babysitter can run the same signal.

Around the four-month mark, it also removes the small nightly negotiation about who does what, which is worth more than it sounds by month three. Children in nurseries and childminders often have their own version, and asking what it is lets you align the two.

Consistency across people is the harder half of consistency and the half most households never address.

When it stops working

Every routine has weeks where it appears to do nothing, usually coinciding with development, illness, travel or a change in daytime sleep. Abandoning it during those weeks is the common mistake, because the signal is precisely what helps re-establish things afterwards. Keeping it running while lowering your expectations of what follows it is generally the better response.

If bedtime has become genuinely distressing for the baby or the household, that is worth raising with your health visitor rather than persisting alone. Anything that changes suddenly and comes with a baby who seems unwell is a clinical question, not a routine question.

Starting and adjusting

There is no particular age at which a routine must begin, and starting one in the newborn weeks mostly benefits the adults by giving the evening a shape. As the baby gets older the same sequence can be extended slightly, and most households find it evolves rather than being replaced. It is worth keeping the last two steps stable even when the earlier ones change, since the ending carries most of the signal.

A routine you have run for months is a genuinely useful thing to have in place during travel, illness or a house move. That portability is the strongest argument for making it simple enough to do anywhere.

The takeaway

Build the shortest routine you can bear to repeat, run it in the same order, and teach it to everyone else in the house.

The good-enough version, done calmly, is the one that helps.