There isn't a straightforward answer to this question - it depends on the structure of your course, the amount of studying you did throughout the year etc. At this point I would strongly advise you to be strategic and work backwards from the exam paper. You won't get anywhere by mindlessly flipping through your lecture notes or copying out textbooks. I'm sure that your uni provides you with past papers and sample answers, if not then use the internet to your advantage. Try to write answers for as many exam questions as possible. It's fine if you can't do this without looking at your notes first, but do try to write from your memory whenever you can. If you do this often enough, you will start to remember many rules without even realising.
With that said, my course is not easy by any means but I believe that it may be possible to pull this off in land law if one really knows what they are doing, but it is still risky. We get to choose three out of seven questions, each pertaining to a standalone topic. This allows one to choose around three or four subjects to know really well. If your exams follow a similar structure, then selective revision will be a helpful strategy for you. If your examiners like to mix it up, then you need to understand which topics tend to come up as a package (e.g. co-ownership, proprietary estoppel, constructive trusts and mortgages).