The daily routine of a 2-year-old
At two years the rhythm is simple and stable: one nap after lunch, one night in a single piece. What changes is that the nap starts competing with bedtime.
This is the beginning of a trade-off that will run for two or three years: too much nap and evening settling drags; not enough and late afternoons become unmanageable.
The day below shows the usual compromise — a shorter nap than at eighteen months, finished early enough to let sleep pressure build again before evening.