Hey!
In general, what I found most helpful when revising (both in my undergrad, and for SQE1) was to make sure that I actually understood the concept and didn't just remember the wording of it. By approaching it that way, even if they tested a slightly different variation of the topic, I could usually figure out how the law would still be applied (rather than panicking!). I also found it helpful to condense my notes into shorter summaries or mind maps so that I could see the structure of a specific topic, and visualise how the cases and principles worked together. As I understood the concept, rather than memorising the wording of the textbook, this meant that I had to go over it less - even if the initial step of ensuring I understood it took slightly longer!
For closed book exams, active recall really helped me for the memorisation side of things too (+ it is what I'm currently using for SQE2). For example, I use Quizlet a lot to test myself on key principles and cases, and they have a great Learn feature that I thought was a great way to switch up the way I was learning (alongside the flashcards). Additionally, one of the best ways to remember topics is to teach it to a friend or course mate, as explaining it out loud usually makes it very clear what you actually understand and what you still need to go over. Over time, this made the volume feel a lot more manageable as I could focus on the areas that I knew I was weaker in.
Wishing you the best of luck with your exams - I'm sure you'll smash it!!