i would often read aloud my notes (sometimes as if i were explaining them to someone, pacing, using gestures). this was my main technique
i had a mini whiteboard that i would use to write out key dot points / diagrams. would often try to write down everything i remembered for a topic before looking at my summaries
if i covered content late at night i would look over it quickly in the morning
for english paragraphs / language oral responses, i would record myself reading responses, then would listen to these when i was doing stuff around the house, sometimes speaking along