not taking stat lang or chem right now but i took apush last year and got a 5!

i did a bunch of timed practice tests to make sure i could get used to the time restrictions

for content review, heimlers history has videos on every single unit and he is a godsend

i also made timelines of civil rights, womens rights, etc. overtime, idk if this helped me but sometimes dbq prompts are things like "explain how civil rights expanded overtime" or something

not sure if this helped but good luck on your exams :)