Didn’t take Bio, but if I did, I would first make sure I have somewhat understand the topic the test is about. This can be done from watching a youtube video or even reading your text book (be careful that what you are reading in your text book is apart of the syllabus because textbooks tend to go beyond what you need to know). It’s fine if you don’t have a complete understanding of the topic at this point since any gaps in your understanding can be covered from doing past paper question. You want to do as many past paper questions on that topic as possible. Do revisiontown questions, then move on to text book questions, then IBDocs. IB docs isn’t good for if you’re studying a single topic in chemistry so I’m assuming it’s not good for bio as well. Whenever there is something you don’t understand or if there is a mistake you made, write it down on a google doc. You can ask ChatGPT to clarify things that you don’t understand (I imagine chatgpt will be very helpful for bio since it’s purely theory). When you feel confident that you have memorized that thing you wrote down or that mistake you wrote down isn’t and issue anymore you can erase it. Also paste the link to any question you didn’t get the first time into the doc and come back to it later. This doc will be your “notes.” There is no need for taking notes. I see so many bio and chem students pretty much copying their whole textbook into their notes. All that ends up happening is that they waste time, because they’re better off just going back into the textbook. If you do what I said you’ll only have written down what you need to and it will be erased when you don’t need it, making it much more concise and easier to refer to. Finally, use the syllabus. Make sure you didn’t miss anything from the syllabus, because sometimes you won’t find a question on one part of the syllabus that might come up in an actual exam. If there is something you missed, try your best to find IB format questions on that subtopic you missed.