The clocks go back this month, and every parent of a small child knows what that means. The extra hour everyone else celebrates arrives at your house as a 5am wake-up, delivered by a cheerful toddler who has no idea anything has changed.
Nothing has gone wrong with your child's sleep. The clock moved and their body clock didn't. The good news is that this is one of the few sleep problems with a genuinely reliable fix — provided you start about four days early.
What Actually Happens When the Clocks Go Back
In autumn, clocks move back an hour. Everyone gains an hour in bed, in theory.
Children's body clocks don't read the news. A child who reliably wakes at 6am keeps waking at the same point in their internal cycle — which the clock now calls 5am. The same shift happens at the other end: a 7pm bedtime now feels like 8pm to them, so they're not tired when you put them down.
Two things are worth knowing. Children under about four months are driven much more by feeding than by light cycles, so they often sail through it. And most children over that age resettle on their own within three to seven days even if you do nothing at all. Preparing just shortens an adjustment that would happen anyway.
The Four-Day Shift
The method is to move your child gradually onto the new schedule before the clock does it for them, so the two meet in the middle.
Starting four days before the change, push everything 15 minutes later each day — bedtime, wake-up, meals and naps. Moving all of them together is what matters, because meals and daylight anchor the body clock just as much as bedtime does.
- Day 1: everything 15 minutes later than usual
- Day 2: 30 minutes later
- Day 3: 45 minutes later
- Day 4: a full hour later
- Change night: the clocks go back, and your child's "new" time is simply their normal time
If you've left it late, 30-minute steps over two days work nearly as well. A single one-hour jump the night before does not — that's just the time change with extra steps.
Shift the whole day, not just bedtime. This is where most attempts fail. Parents push bedtime 15 minutes later but keep breakfast, lunch and nap times where they were, so the body clock gets contradictory signals and holds its original schedule. Meal times and light exposure are powerful anchors — arguably more powerful than bedtime. Move everything, or the shift won't take.
By Age
Babies under 4 months. Largely feed-driven rather than clock-driven. Most parents can ignore the change entirely and simply follow the baby.
4 months to 2 years. The hardest group, because naps have to move too. Shift naps by the same 15 minutes each day — a nap left at the old time will drag the whole schedule back to where it started. Expect a few unsettled days regardless; this age adjusts more slowly.
Ages 3 to 5. Responds well to the gradual shift, and old enough to be told what's happening: "the clocks change on Sunday, so we're doing everything a tiny bit later this week." Preschoolers handle change far better when it's been named in advance — see transition timers for why forewarning works.
School age and up. Usually the easiest, and the gradual shift can be compressed to two days. The bigger risk is the weekend lie-in afterwards: sleeping in on Sunday to "catch up" re-shifts the body clock and makes Monday worse.
If You Forgot to Prepare
Most families read this on the Saturday. That's fine — the recovery version works:
- Get outside in the morning. Morning light is the strongest signal for resetting a body clock, and nothing else comes close. Twenty minutes outdoors after waking beats any amount of schedule engineering.
- Hold the new bedtime from night one. Resist putting your child to bed at the time that "feels" right — that's the old schedule talking, and following it extends the adjustment.
- Keep daytime naps on the new clock, even if it means waking a child slightly early from one.
- Don't let them sleep in to compensate for an early start. It feels kind and it prolongs the problem by a few days.
- Expect three to seven days, and don't start troubleshooting a "sleep regression" before that window is up.
Where a Timer Helps
A visual countdown doesn't change your child's body clock, and it's worth being straight about that. What it does is hold the routine steady while the times underneath it are moving.
During a shift week, every step of the evening lands at an unfamiliar time, and the usual cues — it's dark, we've had dinner — are all slightly wrong. A routine that runs identically each night is the one stable thing left: same sequence, same lengths, just starting a little later each day. Giving each step its own countdown keeps the sequence from stretching as the week drifts. Our bedtime routine timer guide covers the setup, and bedtime by age has the arithmetic for recalculating start times.
It helps most with the children who find the week hardest — those who struggle with unpredictability generally. A countdown they can see makes the evening legible even when the clock has stopped making sense; the same reasoning as a timer for anxious kids. And for the early wake-ups, a visible timer answers "is it morning yet" without a conversation at 5am.
Count back four days from the change and start tonight. Everything 15 minutes later, including meals and naps, and keep the bedtime sequence identical while the times move. Download Tokimo free to time each step, or browse all the visual timers for kids.
Frequently Asked Questions
How do I prepare my child for the clocks going back?
Shift bedtime, wake-up and meals 15 minutes later each day for the four days before the change. By the night of the change your child is already an hour behind their old schedule, so the new clock time matches what their body is doing. If you have only two days, use 30 minute steps instead.
Why does my child wake up early when the clocks change?
In autumn the clocks go back an hour, but a child's body clock does not move with them. A child who normally woke at 6am now wakes at what the clock calls 5am. Nothing has gone wrong with their sleep — the clock moved and they did not — and most children resettle within about a week.
How long does it take kids to adjust to the time change?
Most children adjust within three to seven days without any preparation, and babies under about four months often barely notice. A gradual shift beforehand shortens this to roughly a day. Morning light exposure is the single biggest accelerator once the change has happened.