My nephew is 2 yrs old and bothers his parents as he is awake the entire night . We all try to make him sleep but he doesn't and keeps playing the entire night and doesn't even sleep in the morning because we don't let him. He sleeps for 1 hr in the Afternoon and that too he is almost not fully asleep. He is facing this problem from past 7 days . He is eating fine and playing in outdoor environment. His parents are both working and because of him they even couldn't sleep. Any medicine which can treat this disorder of his ??