im not entirely sure, since i haven't experienced it. But could you give me a run down of what happens after you finish the course for a particular course? Start of practice exams straight away? look over notes, DO NOTES? haha.
Is it 1 practice exam a day, or 3-4 a week? hows the general gist of it?
You should get stuck straight into practice exams after you finish a course.
For theory based subjects (biology, business-man to some extent, etc), look over your notes, if you find out something new add that to your notes.
For numerical based subjects (maths, chem etc), like my old chem teacher says "practice, practice, practice, you think you get it? Well practice some more". The more questions you do the easier they will become.
Don't start making your notes once you have finished the course, make them when you are going though the course.
I did one practice exam for each subject everyday (5 in total). Though it is important that when you do exams, you have to make sure to always do them under exam conditions! Don't go over the time limit, be strict to yourself.