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The sleep of a 1-month-old baby

At one month there is nothing to organise. That is the hardest part to accept when you are the kind of person who likes things tidy — and I speak from experience. I spent my eldest’s first month hunting for a pattern in a spreadsheet.

There wasn’t one. A newborn sleeps 14 to 17 hours out of every 24, but in chunks of two to four hours, scattered anywhere. Day and night mean nothing to them yet: their internal clock is not plugged in, and their stomach decides everything.

What will actually help you this month is not a schedule. It is being able to read two or three signals: their tiredness cues, and the moment their sleep is deep enough for you to put them down.

Sleep per 24 h

14 – 17 h

Of which at night

8 – 10 h

Naps

4 – 5

Awake window

1 h – 1 h 45

One cycle lasts

~ 50 min

Before putting down

~ 20 min

The key point at this age

They fall asleep in active sleep, and that changes everything

Unlike you, a newborn enters sleep through the active phase. They move, grimace, smile, grumble, sometimes half-open their eyes — and they are asleep. Many parents think they are awake and stimulate them at that point, or put them down thinking they are deeply asleep. Both wake them. Quiet sleep, the one where a transfer works, only arrives after about twenty minutes.

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They fall asleep

Their night at 1 months, minute by minute

    The whole night, at a glance

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    The timer: when can I put them down?

    Start it the second they fall asleep in your arms.

    --:--before putting them down

    While you wait, keep them against you and try not to move. The countdown will tell you when their sleep is deep enough for the transfer.

    Keep this tab open. The timer stays accurate even if the screen turns off.

    The day / night rhythm starts to settle

    Around six to eight weeks, your baby starts producing their own melatonin. That is the real beginning of day and night — and often the first slightly long night.

    • The longest stretch of sleep moves into the night: that is the signal the internal clock is starting up.
    • Expose them to daylight in the morning and keep nights dark and quiet: that is what sets their clock, far more than any schedule.
    • Naps stay chaotic. A thirty-minute nap and a two-hour one on the same day is ordinary.
    • Quiet sleep gains ground on active sleep: their sleep gradually becomes more stable.

    The classic trap

    Evening crying peaks around six weeks and then declines. It is not a sleep problem, and it passes.

    Falling asleep alone at this age

    ✕ Not yet

    You can start putting them down drowsy but still awake, now and then, without expecting a result. Think of it as practice, not yet a skill.

    Put down awake, a child of this age usually takes 5 to 20 minutes to fall asleep. That squirming is normal.

    How much sleep they need, age by age

    The shaded band is the normal range over 24 hours. Hover to read an age range.

    0h4h8h12h16hbirth6 mo1 year18 mo2 years30 mo3 years
    Total sleep over 24 hOf which at night

    Hover over the curve to read an age range.

    The questions of this age

    My one-month-old will only sleep in my arms — is that a problem?

    No, and it is the rule rather than the exception. At this age they have no way of settling themselves: your smell, your warmth and the sound of your heart are part of what puts them to sleep. You are not creating a bad habit, you are meeting a real need. What changes things at this stage is less putting them down sooner than putting them down at the right moment.

    Should you wake a one-month-old to feed them?

    Often yes, especially in the first weeks and until weight gain is established — usually every three to four hours. But that is a question for your health visitor or GP based on their growth chart, not for a website.

    Why does my one-month-old make noises all night?

    Because half their sleep is active sleep, twice as much as an adult. Grumbling, small cries, irregular breathing and arm movements are all part of it. The natural reflex is to check at the first sound — and that is often how you wake a baby who was sleeping very well.

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