You are on a very hefty dose of Pred, so you are going to have the insomnia for a while. My experience was that I needed only a small amount of sleep (maybe 3 or 4 hours tops) and was fine all day long. I simply did not get tired and in fact felt very wired. Heck, I wanted to rip up buildings with my bare hands. So, buy lots of books and movies and enjoy the weird feeling.