Amelia W. answered 01/08/21
I have spent over 400 hours tutoring for the MCAT in the past.
With NS, be a bit careful. Their CARS sections are definitely difficult and good practice but I would recommend combing through all of the AAMC material first and then using UWorld. For BB, the order I approach studying was to use TBR Passages to build a foundation, reinforce the foundation using UWorld, and then assess if I am ready for test day with AAMC.