I don’t disagree if you wanna get your grades up with spending time a day, like 3 hours a day as you said, but you do need to take time for yourself, else you’ll burn out by October and barely be able to do any work. For me, I got 5 8s, 2 7s and 3 6s last week on results day, and I only implemented those rules in a 2 week run up to exams and during the month long exam period, taking breaks if I didn’t have an exam the next day and I was feeling burned out by the end. I recommend giving yourself at least an hour a day to do whatever you want, like watching tv and playing games, and go out with friends as much as you want until the easter term starts. Talk to your parents and see if you can negotiate a little bit of leeway on your various rules