What I do with my staff is have them identify those things that always seem to trip them up. I then have them write down tips on those things on a sheet of paper, usually in a grid format. For example QACA, EACA, ACA across the top and things like vesting, auto esclation, etc. down the side. I have them do that writeup over and over again until they can do it from memory. On the day of the exam, the testing center will give you blank paper and a pencil. Before they start the exam, the candidate writes up their tips/grid on the blank paper. Then when you get to those questions, you have something in writing to look at to help keep things clear in your mind.
Do the practice exams over and over again, as some of the questions from those will appear on the final exam. Also, is there anyone else in your office that you can sit down with? For example, I have my ERPAs do training sessions with my QKA candidates on things they needed some additional guidance on.