My 3 1/2 yo doesnt have a day sleep, generally she goes to bed at 7:30 and sleeps to between 5-5:30 am I personally dont think this is enough sleep, and she is just foul most afternoons. About once a week or once a fortnight she will have a day sleep and sleep for 2-3 hours. We are trying to get her to sleep in longer in the mornings, but to no avail at the moment.