youre wasting your time and youre gunna seriously regret it when youre in year 11, you dont need to revise jackshit until like january in year 11 really, i flipped my grades completely in a couple months, anyone can. honestly dont waste your younger years doing pointless stuff that you will forget anyway, you will be taught the same part of the course atleast twice if ur in year 9 so dont worry. id say the same to you if your in year 10, the best thing to do is research effective revision techniques so that when u do revise you know how to do it right. i know people that revised 6+ hours per day from december and did **** becuase they arent revising properly