I suggest taking Gen Biol, O-chem, Human Phys, Cal before you take the test or at least being in these classes during the month you are taking the test. I scored terribly before I took Human A&P and after that the score went up quite a lot. To me the math and the chem are easy but the reading and the verbal might be challenging. For these, you should study like 5-10 words a week and just keep doing a lot of practice tests over and over. Good luck! And remember, PCAT does play a role in your admission decision but it does not ultimately determine if you get in or not. Do your best and have no regret!🙂