Hello!
I got 8, but I'll still give you some advice.
First of all, don't worry if you don't get 10 A*s, I've been there done that. I was determined to get 10, and although it was a slight disapointment, I couldn't complain at all with my results! Besides, I've learnt much more now, that uni's take people based on a lotttttt more than GCSE's - work exp, extra curricular etc.
I tend to procrastinate when I have too much time, so like me you might work better with less time as you feel more pressured to get your work in? If this is so, let yourself have for example the morning off, but then set yourself a strict timetable for the rest of the day, as because you have to fit it all in before bed, you're more likely to keep going with out breaking, than thinking you've got all day and can afford to take your time.
The timetable for me was key. Have a timetable with things you can tick off once you've done them, to show yourself you're moving forward. You can then sometimes get ahead and do things from the next day, that way it motivates you to do things in advance so you can have some time off nearer the end!
Hmm.. also don't just stop everything in your life for revision right now, you still need some fun time to keep you going. Meet up with friends some evenings, that way it doesn't dig into your day time revision time too much.
That's all I can think of right now - if you have any more specific questions feel free to ask