CFAI Books vs Schweser Dilemma material, required, studying

Zesty

Hi, I studied from Schweser for Levels 1 and 2 and was very comfortable with it.
While studying for level 3 from Schweser alone I am feeling a bit shaky. There is a feeling that I am missing out on fine points which can appear in the exam. Since the morning session is a written exam a deeper understanding may be required. I was reading the institutional investments material, I refered to the CFAI books and realized that there is much more to it. I can’t study from CFAI books now as there is not much time. Is there any one who is solely relying on Schweser with may be some selective reading from CFAI books. Which sections do you think I should definitely read from CFAI books.
Thanks a lot.