Help with other ways to master content/confidence

I have been struggling in clinicals with a lack of confidence. I feel that even if we went over the information in class I have trouble remembering it until we do it in a case study or I have a patient with the condition. I can remember most information from discussion based classes, but struggle with powerpoint dependent teaching style. I can read the same chapter three times and barely retain anything in long term memory. I am entering my third semester as WHNP and just now learning about abortions and infertility (so frustrating!). I got two case study question books that have helped but am looking for other good study tips. My grades are fine despite the way I feel about my knowledge base. While I understand how seeing patients at the same time as learning can be beneficial, i believe it comes with some short comings.

Due to medical and family issues, i have fallen behind in clinical hours but am continuing full time in the program with supervision. I am working with the school to schedule enough clinicals to catch up. My preceptor is very supportive and says I need to trust myself. Just not sure how to go about it.