How to study for comprehensive test

I am currently in my consolidation semester of the Practical Nursing program at Seneca, and right now I am starting to stress out a lot. To pass the course there are 2 comprehensive tests that we need to write, and we need to get a 75 on either test to pass the course, right now I am feeling so stuck and drained because we need to put in 400 hours of clinical and I have done 200 so far and try to work on the side, I would study around 15 questions a day and so far, I have done around 300 questions. I've been studying from the Saunders comprehensive review book, and feel like I am not learning anything, I have another month to study, and just don't know what to do, I basically need to study for this test like one would for the Nclex-pn Test. does anyone have any tips and ways to review for a Nursing comprehensive test.