Do you know why you are getting no sleep? Is yr mind going in circles? Are yr thoughts uncontrolled. Can you just lay down and think about nothing for 4-5 hours.
For me what always helps is studying I always fall a sleep whilst doing that. Just order a free trial course of something you like, and go at it you dont have anything else to do youre awake doing nothing right?. If you still cant sleep at least you are learning new things. But trust me I am alsmost certain it will work..