Good question. I've had this problem my whole life, and i found the fastest and easiest way to do this is to just stay up as late as you norm would till like 4, and then wake up @ 6. U'll wanna take a nap real bad durin the day but dont, push it out till 9-10:00, and ull be good to go for school. You might wanna start doin this now so ur fully back on schedule. I'd say skip the drugs to help u fall asleep, I've found that the more that i take them, the more than i become dependant on them. If you you're still having a hard time sleeping, eating something with tryptophan usually helps. Something like turkey, oatmeal or peanut butter should do it. Also try to get your workout in during the morning, the closer you workout towards bedtime, the harder it is to fall asleep.