Start doing revision for the exam from the first day actually, after u ve wrote notes on an area of study, start doing questions on it and revising it straightaway. that way its gonna get stuck to ur brain and u dont have to go back to that aos1 again as much as in detail as before b/c it would already be fresh in ur memory after constant revising throughout the year. I actually used to do it segment by segment, so when i finished writing notes on every 2 dot points of an area of study, i would start doing questions relating to those 2 dot points straightaway and then i would repeat that process until i finished the whole aos. I did psych last year and i started doing exam questions from the first day (relating to the area of study i was on) whether its from vcaa exams or somewhere else, so i didnt have to worry about questions towards the end of the year and i kinda knew how to answer questions many months before the exam. I got a 40+ score for psych, so i think its because of my constant revising and not leaving everything to the last minute. Its always good to get some practice questions in between writing your notes, so u dont feel that stressed before an exam/sac.