How should I prepare for a high school physics competition this Friday?

Hey everyone, I could really use some advice. My school signed me up for a physics competition hosted by another high school. The exam covers basically all high school physics — from motion to quantum mechanics.

I’m decent at math and okay at physics (not brilliant, but I can usually handle formulas and concepts). The issue is I have some big gaps, especially in quantum, motion, and waves. I’ve been cramming since yesterday, but I feel like my study method isn’t working — I’m not making real progress.

The competition is this Friday, and I really want to give it my best shot. Do you have any study strategies, resources, or last-minute prep tips that could help me get as ready as possible?