Personally, I'm a "last nighter" too, well, more, "last weeker" as wee get a week off for studying at Uni.

I tend to do like 30 minutes of revising, play 5 minutes of games (usually fighting games where you get to randomly button mash and bash up random things) and then repeat.  I can't go into the night - I stick to normal day hours.
I also don't believe in solid reading, rather, trying to do sample problems.  If they provide a lot, do some to get an idea of what you need to read up on.  If they don't, you're probably stuck on trying to memorize the notes (yeah, difficult).
But always make sure you do problems if they give out any, including sample exams.  Something may seem trivial when you read about it, but applying it can be different, and this is what you're usually being tested on.