The sequence that I give the students I mentor/tutor is:
1. content review (3-4 wks max) w/ whatever 3rd party company of their choice. Incorporate Anki or whatever spaced repetition technique (do daily)
2. UWorld (1-2 months ideally) -> aim to do 70%+ of the qbank. Better to get it wrong and learn from your mistakes.
3. 1 month out from the MCAT, purchase the AAMC MCAT bundle. Make "pseudo-exams" w/ SB / q-pack / etc questions to simulate extra tests. Take FL practices 1-2x/wk that last month.
Adjust as needed to cover material. The exam is a lot of pattern recognition, and 1st and 2nd order thinking questions. UWorld gives great exposure, AAMC gives targetable context to that exposure.