AM Practice Exams - Best Strategy?

Any L3 passers have any advice on the best way to take/utilize the AM practice exams? At L2, I tried to create the most exam-like environment and do as many 3 hr sessions as possible. It worked really well. After just taking my first L3 AM practice exam, I feel a) overwhelmed and b) that it may be best to just work through the AM practice exams until May and not do ‘exam day’ situations until May. Sorry for rambling. Any advice is appreciated.