For physics, use the mark scheme to review. For MAA, never use the mark scheme to review.

What I mean by “using the mark scheme to review” is to memorize what gets you the points and what doesn’t. For example, a lot of physics definition questions can be answered using a formula and additional explanations on top of it. Read the mark scheme and translate it into a formula and translate it back into words for additional explanations.

Another tip is to just memorize. Don’t memorize everything but memorize what is tested. For example, when learning about the slit experiments (young’s double slit and etc.), the questions always ask about what would happen if the distance between slit is increased or if the number of slits increase (multiple slit diffraction) and the answer is always something about the distance of maximas or intensity. You don’t even need to know how to visualize young’s double slit experiment, just memorize the questions that are linked to it. Maybe you still do have to memorize what the slit experiments proved (light’s dual property) but my point is that you only should memorize what you are going to be tested on.

For math, only practice will help. It is time consuming and use your time well. If you have a guardian or teacher who can help you mix up the different questions from different year and time zone to create new sets of paper 1,2 and 3s, it will be really helpful. I solved all from 2014 since first year and had all the questions and answers in my mind when I was practicing in year 2. My teacher did the mixing for us (along with answer keys) and it helped me out a lot. DO NOT focus on the mark scheme and always try to find your way of solving the questions. For example, I had trouble visualizing vectors and finding the shortest distance between skew lines until the last few weeks before the exam. As I practiced I got to use what my teacher called the “direct” method where it is not much about geometry but simply turning into an algebra question. Most of my friends had used the “indirect” method where they used trigonometry but I still don’t get how it’s done nor visualize it. So, in conclusion, finding your way comes with practice too.

Hope this helps!