For most people...PCAT is not really a test you want to "cram for" but since you're in this predicament, I would focus on bio/chem almost exclusively. Those 2 sections are weighed the most towards your overall composite score, and thus the most important. Bio is a bit easier to prep for than chemistry, just the more you memorize before the test, the better. Chemistry focus on the nomenclature, basic Ochem 1 synthesis (Sn1, Sn2, elimination, hydrolysis) etc as well as the biochemistry sections (how kreb cycle works, what enzymes are involved, gluconeogenesis, etc). also lots of questions on gas laws and basic general chemistry. Good luck!