Sleep is important, there's no way I could go back and even try to do nights. I'm too damn old! Review courses are always a good idea, and get your hands on as many questions as possible. The key to all medical based tests is questions. Study is great, but the questions force your mind to think. On those tests they give you all these questions that test how well you take tests, not your knowledge. Even at the boards level, which is stupid. It's an industry, a way for boards to make money. Ideally that want you to fail once or twice so you have to pay to take it again. Bunch of crooks in my personal opinion!