The MCAT is huge, as it always has been. I’m sure you know the MCAT has recently changed, though much of the same material will still be tested. Take practice test after practice test, even if you only have access to the old tests. Focus on your areas of weakness. Try to understand all the strategy involved. And Do NOT neglect the critical reading, it can be a score saver. Practice the critical reading heavily, as those skill will also help on other sections. You can not study too much for this test.
Also, get stellar recommendations from people who know you well.
Again, the best of luck to you. I sincerely hope you achieve your goals.