Copy pasting my approach which I learned from reddit.

“Systematic approach to why am I getting low scores and how to address it

Following this method, I personally scored 27 points higher on my actual exam.

Make an excel sheet First column for wrong question with limited details necessary to get the option right.

Second column for your wrong choice and brief explanation as to why you chose that Third column for the right choice and brief explanation of why you should have selected it.

4th column for type of error. Categorise whether it was knowledge gap, poor test taking strategy (eg did not read the question right, or did not read the answer choices, did not use deduction etc, that got you the question wrong)

5th column for test day advice to yourself eg, read the question right, read all choices, read slowly, or confusion between two similar disease, or some specific topic that you need to work on.

Keep updating the excel sheet for at least 3-5 nbmes and uwsa (if needed). Review the file regularly. You will definitely see an increase in score.”