How much you revise is dependant on you. You might revise less because you are confident in most subject or you might revise more with subjects you are struggling for. It also depends on how much the work in class and previous revision has stuck in your mind. I paid attention in all my classes and put effort in my work for yr 10 but I didnt revise for that year; when I did revise in yr 11, I only revised a little bit for RE, maths and etc and more emphasis on science, french and etc since I was still struggling with the content and exam. Dont revise too much you'll burn out - it's better to revise daily but only a short time period than revise for more but not as often