Prednisone makes me slightly more manic than usual, which is why I think it makes sleep harder - just think of all the things you can get done when you're awake at 2 am! I really do love prednisone, but after a while the no sleeping thing can really suck.
So I agree with the other posters - ask for a sleep aid. Ambien works for me, but maybe not appropriate for you, nor do I have any clue whether it's ok to take with steroids. You can also talk about upping the melatonin, but that's really short-acting and probably won't do anything about KEEPING you asleep once you get to sleep.
I have found that I get pretty quick response from steroids. The one time I took them for more than a week it was for joint pain, and it took a good month to resolve all of that, plus another month on a taper.
Symptoms since I was 15 (now 50), 2 “definitive” IBS diagnoses but no treatment except “eat more broccoli, you are not getting enough roughage"..lol, CD in small bowel diagnoses with Pill Cam 06/2010, Kapidex 60mg, Prednisone starting at 40 mg (moving to 30 soon YEA!!), Pentasa 4,000 mg, Amitripyline 10 mg, SCD, Freeda - Multi Vitamin & 2000 UI D3, Melatonin 9mg