Hiya! So my recommendation for English would be to make some mind Of key themes, quotes characters, etc for each chapter or same it depends what you’re studying. I have quite a lot of resources. Left over from my English A-level. If you want to have a look, then just give me a DM.
As for biology, I’d recommend having a look a past papers and focusing on the topics that you really do not understand which will help to pick up the extra marks
I’d recommend YouTube to have a look arts, quick summary videos or just for recaps. Quizlet is also really good as you can make your own flashcards on there and you can even use other peoples resources that hv been pre-made
For history, I’d recommend doing as much essay practice as possible on giving over key dates/facts , anyway that can help you get them to stick in your brain
Good luck for everything