Cramming for AP Bio and Chem 3 weeks in advance?

Whats the best way to cram for bio and chem with 3 weeks left for the exams? Im a sophomore and I need to study these two more then human geography and world history

Find some past exams, take them and then focus only on the areas where you scored poorly.

Don’t take AP bio and AP Chem as a sophomore.

Bump, I am currently going on polyphasic sleep to cram for Bio and Chem and my other 2 AP’s, can someone give me motivation for ivy leagues lol

same! IDk about bio, I got a pretty good score by just knowing the basics, for Chem, don’t forget to review the labs, they show up! also, do some practice FRQs because they are standardized