Are you asking for tips? Or are you asking what others do?
If I had a test, I would probably plan for it, and avoid studying the night before, and would do something enjoyable the night before. Though if I needed to study, I would probably give myself some incentive. Study 30 minutes = 1 cookie, 60 minutes, 2 cookies. and you get to eat a cookie after every 30 minutes. Or whatever works for you