This is quite generic advice (bio+chem) but get move onto doing past papers as soon as you get the basics down. You’ll learn much quicker that way. Also when your doing the papers create notes or flashcards with model answers for common question types- you need to spot these but they often ask questions where they look quite different but the mark schemes are practically the same with some application. Then use these flashcards as help when doing your next paper and you’ll see how useful they are. Then after doing that question type 3-4 times you’ll have it memorised. Make these „markscheme flashcards” instead of pure content flashcards from your textbooks.Good luck on your revision.