hey i also did aqa science (triple) and aqa maths and english edexcel
first off you’re only in year 10 so don’t put pressure on yourself! you have so much time to revise and prepare for your gcses but i can understand you wanting to do well
https://filestore.aqa.org.uk/resources/science/specifications/AQA-8464-SP-2016.PDFabove is the link to the combined science specification, memorising all the content on there is key, everything on that link is everything u need to know! also do lots of practice questions, there’s only so many questions they can ask about a certain topic so doing as many practice questions as possible is key (use physicsandmathstutor.com), but i recommend saving the full past papers for year 11 closer to your exams. flashcards were super helpful for me when memorising content
with aqa maths i can’t really say much except do a ton of practice questions on the areas you don’t understand or are a bit weak at, if you don’t know how to do a problem look online (youtube or google or something) and try to understand the steps needed to solve it, then do more questions of a similar type until solving it becomes super easy to you
for edexcel english literature my texts were macbeth, the empress, and a christmas carol. remembering and analysing quotes is super important and get used to common structural and language features so you can identify them easily
tbh most of my advice would be more useful to you in year 11 so don’t stress now but implementing a few of these revision techniques will probably help you in the long run, let me know if you have any questions!