Allocate sufficient time in your study plan for revision towards the end of the exam preparation. Going through the whole study text when only two or three days remain in the exams is not recommended. You would probably feel overly exhausted and stressed from trying to retain the information contained in the study texts in such a short span of time. A better approach would be to draft your own study notes through out the exam session which you could then use for revision purposes right before the examinations. Exam Pass Cards from one of the approved publishers could prove handy in case you are not in the habit of making your own notes.