Advice on practice exams

[Dr.9999]

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So I've been taking chads O-Chem quizes and doing O-chem Destroyer problems and it seems like I'm doing better on Destroyer than Chads. I think Chads problems are more tricky and i feel lost when I do his quizzes :/ However I also did the qvault exams and Ive been getting solid 20.
As far as bio goes I did destroyer problems 3x and I did exam one on AP bio, qvault and chads and I'm doing okay scoring in the 85-88%. And for gen-chem Ive only done Chads quizes topscore and qvault there is NO WAY i can do chem destroyer its too hard.
What do guys think I should do? I'm really worried and my exam is in 2 weeks :O

 

[Msmouth]

I would do all of Chad's quizzes and watch his explanations if you don't understand. I felt he was spot on for gen chem and orgo. Also do orgo road maps if you haven't already.