I'm going through the same thing rn but i'm trying to mainly focus on paper 1 and 2 to bag most my marks in because the papers marks add up to give you final grade, so I noticed that if you miss like three 16 markers assuming you do well on other questions you still can get A/A*.
This is my advice, you don't have to follow it if it does not suit you well;]:
OVERALL:
- Focus on research methods because they can be integrated in your topic regardless and it is all topics, most people lose easy marks on it as well.
- Memorise at least 2 evaluations for sub-topics preferably one strength and one weakness, it helps than stressing to learn 3/4 for 16 markers. But in examiners reports, no ones recieved 16/16 on the real exam so two good evaluations can solidify at least 11/16.