1) Review last minute biology principles as well as O chem rxns and Gen chem formulas.
2) Practice PAT daily. It's just puzzles. Easy. The more you spend time with it, the better you will do.
3) 1 day before, don't do anything. Just relax your eyes and try to walk around in a park with trees and nature. Inhale a lot of fresh air so you sleep well at night.
Morning of test - eat some safe stuff i.e. guarantee no diarrhea but don't get too full. Bring a granola bar so you can have a bite during break. Don't eat too much during break. Your brain will get lazy. Arrive 40 min early just in case.
Best of luck,
Kitty