Year 13 is like a marathon: you've got to nail the pace. You don't want to burn yourself out before mocks but you also don't want to fall behind. Seeing as you've achieved AAA in your year 12 mocks, it won't be necessary to heavily revise year 12 content until year 13 mocks roll around. Year 13 is intense, and you simply won't have time to constantly revise year 12 content whilst keeping up with new topics and coursework. For now, focus on completing homework on time, revising current topics that you're covering, and completing essays to the best of your ability. It would help to revise quotes for English for a few minutes every day (and maybe cast an eye over any revision notes for history and politics from time to time), but it would be more productive to use additional free time to relax: don't burn yourself out before it matters.