Yes it is possible. Just make sure you utilise the Easter Holidays as much as you can - if you don't then you wont get the results you want. I recommend that you do about 6-7 hours of revision a day for the rest of the Easter holidays. Some people on here might say that's a lot, but that's what I did last year, and I got the results I wanted. When I revise I divide the day up into morning, afternoon, and evening, then allocate a subject to each of them. Good luck with your exams. (: