Age guide · Ages 2–3
This is the stretch where your child gets language, opinions and a will of their own, roughly in that order. Most of what feels alarming at 2 and 3 is ordinary. Here's the shape of it.
At 2, a child is usually running — stiffly, arms out, brakes not fully fitted — climbing stairs with a hand held, feeding themselves with a spoon and losing about half of it. Language arrives in a rush: around fifty words, then the first two-word phrases (more juice, daddy shoe). They play alongside other children more than with them, and that is exactly right for the age.
By 3, the sentences are three and four words long, strangers can understand most of what is said, and pretend play has properly begun — the sofa is a boat, you are handed invisible tea. They can jump with both feet, copy a circle, and pedal a tricycle. Somewhere in here they start asking why and do not stop for several years.
The spread is wide. A child who walks at ten months and one who walks at sixteen are both fine, and by school neither will stand out.
Most 2-year-olds need 11 to 14 hours in twenty-four, and most still nap — an hour or two after lunch. Between 2 and 4 that nap disappears, usually not gracefully: it goes, comes back for a fortnight, then goes for good. Dropping it too early shows up as a 5pm meltdown and an earlier bedtime, which is the fix.
Three-year-olds land around 10 to 13 hours, mostly at night.
Two things change sleep at this age and both are normal:
Appetite falls off a cliff somewhere after the second birthday, and it is supposed to. Growth slows sharply after the first year, so a toddler needs proportionally less than the baby they were. Fussiness peaks between 2 and 3 — new foods get refused on sight, and a food eaten happily on Tuesday is an outrage on Wednesday.
What helps: offer the new thing next to a known thing, repeatedly and without commentary. It can take ten or more sightings before a food is accepted, and pressure reliably makes it worse.
Judge it across a week rather than a meal. Most parents who chart it are surprised by how level a week looks when a single day looked like a disaster.
Most children are ready somewhere between 2 and 3½, and readiness is about signals, not birthdays: staying dry for a couple of hours, knowing they are going and telling you (even if only afterwards), and being able to pull trousers up and down.
Day and night are separate skills, months or years apart. Dry days come first. Night-time follows when the body starts producing enough of the hormone that concentrates urine overnight, which is outside anyone's control — including the child's. Bedwetting is common well into school and is not a training failure.
Peak tantrum age is 2 to 3, and the cause is mechanical: an 18-month-old wants things at the same intensity a 6-year-old does, with none of the language to explain and none of the frontal-lobe brakes to stop. The wanting arrives before the wiring.
They tend to be shorter than they feel, they escalate if reasoned with mid-flight, and they end sooner when a child is simply kept safe and waited out. Frequency drops sharply as language arrives — which is why the loudest months are often the ones just before a vocabulary explosion.
Nursery is a virus exchange. Eight to twelve colds a year is ordinary for a 2-year-old in childcare, and it is not a sign of a weak immune system.
The ones that turn up most at this age:
Most of this list is about nothing happening rather than something going wrong, and any single item on its own is usually not the story.
At 2, mention it if there are no two-word phrases yet, or fewer than about fifty words; if they are not running or cannot climb stairs; if there is no pretend play and no interest in other children; or if they walk on tiptoes most of the time.
At 3, mention it if strangers understand almost nothing they say; if there are no three-word sentences; if they cannot jump on the spot or copy a circle; or if they are still not dry during the day.
None of this is urgent-appointment territory. It is the sort of thing to raise at a routine review, or to mention when you are there anyway — early is easier than late, and being told all is well is a perfectly good outcome.
Written for parents, not for diagnosis. Every child moves at their own pace, and one late skill on its own is rarely the story — a skill your child had and has lost is the one always worth a call. If something worries you, your GP or health visitor would rather see you early than late. Last updated 20 August 2026.
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