I am struggling with the large amount of content for A Levels (history, biology and maths) and how to revise and memorise it all, although I haven’t had a full test yet as I am in year 12. I feel like I'm spending far too long on revision (literally 9am to 10pm on a weekend revising with a few short breaks for food), and I'm not sure what to do about it. I'm aiming for all A*s or at least As because I got all 9s at GCSE and I am trying to get into Cambridge, which is the other issue because I have no time for super curriculars. I am spending a lot of time making revision resources and memorising things rather than getting on to practice papers. For biology I keep on writing revision cards from textbooks, using markschemes to highlight key terms and then writing questions on those revision cards to memorise e.g. the current topic test I’m revising for in biology I’ve made 140 questions to answer. For maths specifically ive been going through the questions in the textbook but I end up doing too many and I can’t work out which ones to do and which ones to skip and it’s taking far too long. For gcse I had mathswatch so I could see questions I’d done and harder questions but with the textbook it’s just so much harder to track and I end up spending so long correcting one question like an hour some times working some questions out. Then for history I keep on getting confused on what revision resources to use bc my teacher told me the textbook isn’t enough and she’s given us so many extra articles and stuff and I’m never sure how much to write to memorise, because I feel I’m writing far too much information in my revision resources, and my teacher even told me that there was too much content in my essay. every time I find a new resource I’ve forgotten about I keep on spending hours going back and editing my notes to add info from that article in. Any advice/ help especially specific revision techniques and time management.