How much of theory should be memorized for FM?

Dear Sirs,

I am now at the end of learning phase with BPP text.

First I’ve gone through all the lectures on OT (in June), than I started the study text, reading all essential information and making all exercises.

But it seems I am getting better with the technical calculations, but struggling to remember all theory (like assumtions and considerations for every theory/model) and then struggling to use this theory for reasoning C questions.

I have always had a good memory, but here I don’t know what is going wrong… I have understood the sense of things during the OT video lectures, but then…info disappears from my head(((

How much of the theory I have to actually remember and be ready to reproduce in C questions?

When answering the test questions, then I can remind me of the sense of questions.

Thank you in advance!