how much revision do i need to do

my predicted grades for alevel are ABB and thats pretty good compared to the entry reqs for some unis ive been looking at but i wanna aim for AAA or above ideally does anyone have any epic revision techniques or any advice

I would split all your subjects down to sections which you can work on each week. A good rule is for every hour of taught lesson, you do an hour revision at home. So for example, I would do 4 and a half hours of lessons of maths a week so I would do 4 and a half hours of maths revsion a week.
Exam questions are the best revsion as you will learn to problem solve and use knowledge from across the spec.