You will almost certainly find some subjects easier than others. You will also find that you have more to revise for some subjects than others.

Plan your revision to ensure that you use your time to the best advantage. When is the best time of day for you—morning, afternoon or evening? Can you do more reading at particular times? This will help you to plan broadly what you intend to do, although you should always make sure that you leave it flexible enough to adapt later if circumstances change.