my child wakes up between 3 to 4 early morning and stays awake . why this happens it seems like she completes her sleep

A. Child is about three years of age so maybe you’re making your child sleep early and the child completes a nap and then wake up so instead of giving a daytime nap to the child keep the child up through the day and make the child sleep by 9 o’clock to roughly 10 and see if that helps because a minimum of 8 to 10 hours sleep is very important at a stretch in this age