So did I. Yep, the trick is not to fall behind. You really can't rush everything in the last few months. I have friends with straight A*s in science subjects. I'd never see them studying day in and day out. Hell, one of them even went to watch Avengers a day before the exam. They do everything as it's done in school, at home. By the time the syllabus is completed, there's only revision left to be done. A week or two of revision and you'll have about 2 months just for your pastpapers. That's really the key to science subjects. You'll be overprepared, if anything. Just don't lack behind. Also, keep your expectations very realistic in Alevels. The grading is very volatile. People who think they aced the paper end up with Bs at times. You should do just fine though.