I'm a year 12 student. I did all your subjects except Chinese, getting all A*s and a distinction in FM. Obviously, it was a bit different last year as we didn't sit exams but my school was super stringent and we had lots of mocks and tests etc. that we had to prepare for basically like the real exams.
So anyways, the short answer to your question is: if you understand everything and have paid attention in class like really well, then yes. Prioritise your weaker subjects, look at your mocks: what did you get wrong? and most importantly, why did you get it wrong? Is it topic knowledge? Then go over that topic. Is it exam technique? Then practice. Find good concise resources for your subject (e.g. BBC bitesize) as they can be quite a good refresher of the overall topics and a good way to start your revision and then just practice, practice, practice. Keep a doc with concepts you forgot, things you got wrong etc. and go over them in more detail. For biology, pay attention to the mark schemes: what key words do they want? Don't waste time going over things you know and practicing easy questions. Especially with something like math, if you've mastered say circles, then you can skip the odd circle question on exam papers and just take a look at the mark scheme to make sure you had the right general idea. Same with a lot of chemistry calculations and any generally repetitive questions. For English literature, I'd recommend writing essays and getting your teacher (or if you can't maybe a friend who's good at literature) to mark it. The second step is so important as just writing essays without improving on them will not lead to anything. For physics, the thing a lot of people fall into is just plugging stuff into equations without actually understanding the physics behind it. Being able to work with equations can get you a lot of marks but when it comes to the 'discriminator' questions which distinguish the best candidates, you need to understand what's actually going on from the physics point.
That's what personally worked for me as someone who's a bit of a crammer but obviously try stuff and if it doesn't work, then it doesn't. Don't fall into the trap of thinking you have to make flashcards or use this specific textbook just because xyz did. Best of luck!!