A 6 week study plan is really only recommended for students who already have a solid science foundation and content review will be just that - a brief review. If that's you, then breeze through the content review in 2 weeks or less and start doing practice FLs after that. Near the beginning, you might want to check out the Section Bank and/or one AAMC FL to get a sense of where you are and if you need to return to content review for some subject matters. Then do 4-5 FLs over the course of the next month, including the scored FL. That scored FL will be the most accurate predictor of your score. For at least the two or three days before the actual MCAT, don't do any intense studying/FLs. Take it to do light reading and relax. The morning of the exam, read a couple of news articles or something to get your brain going.