Practice Exams

Next week, I am going to start practice exams. But was wondering, how should I go about it?

What do you guys suggest? Should I try to simulate the final exam day when I am taking the practice exams? Sit 3 hours sessions straight and complete all possible questions? Or should I take the test at my own pace. i.e., Check and review the answers after every 10 questions or so?

I know there is no right or wrong way, but wanted to check if there is a “good for prep” way. 🙂