So, I'm in year 11 and we've got November mocks in a week. I'm planning to do some revision over half term but how much revision is too much revision? I've got from tomorrow to next Sunday to revise for them pretty much (not including cramming the night before the exam). Currently I've got 8 hours a day which seems a bit much. Well a lot much. Any advice on how much I should do and maybe tips on how to revise efficiently?