My DD is 4 years 5 months old and still needs an afternoon nap every day without fail. She sleeps about 11 hours per night.
She started school in September and is the youngest in the class with an August birthday. Most of the class started full time within a few weeks, but I still pick her up after lunch 3 x a week (on the days I am not working). If she does not get her nap for whatever reason, she is just so miserable, it makes me sad. She also was still napping over the Christmas holidays. I know Christmas is a busy time for children, so maybe that's why she needed the sleep, but I really thought she'd be growing out of it by now.
Should I be worried? Is it just her body clock, or something else?