You should already know most of the material from taking the prerequisites so you just need to review the material that could be in the test. If you still feel confident about those, then you really only need the two weeks before the PCAT.
The PCAT study guide (it has a practice test too) should be good to get an idea of what is on the PCAT and if you're missing anything before you tackle the official PCAT practice tests. Then it's just those doing those official practice tests, then patching up your knowledge with any questions you've had trouble on. This should be a given, but make sure you do the official practice tests under a time limit. Get the score report even if you didn't get a chance to do all the questions (just come back to them later) so you understand what topics you need to learn about.
The most important part is that all the questions are weighed equally, no matter the difficulty. Guess on the harder questions then look back on them when you have time, you might be surprised on how high you'll still get on the Quantitative Ability component even if you don't get all the questions.