How to remember facts subject wise for MCQ based examination


I have an entrance examination in medicine 3 months from now.
As i know a little about memory palace i am following it for my studies with good results.

How do i memorise?
When i read a particular topic i will think of a movie scene and create locus according to the number of important points and place my points there. But now i found this to be time consuming.
For the past two days i have created memory palace in advance and place my points as i walk through which i find was quick but vague (for eg: mirror and windows in all rooms leading to confusion
Now my question is which is better?
Which will help me in long run?