A simple grid like the one below might be helpful. Decide how many hours you have for revision and allocate them accordingly. Don't forget to include time to eat, sleep, relax and keep other things going in your life!
Be realistic about how much time you have and produce a timetable that spreads the workload and identifies what and when you should be revising in each session. If you are unsure about the areas you need to revise, ask your tutor or study adviser for advice.