I strongly believe in Learning Mode, where you can pick a more specific area based on your detailed score report where your performance was less than optimal.
For example, I scored initially 50% on Domain 6, and 65% on Domain 5 while scoring well on other domains. So I review the questions from my score report in those domains, and read the answer feedback. I keep in mind that PMI weights each domain differently, but my challenge domains add up to 22% of my score.
Then I focus for a few 20-question Domain 6 Learning Quizzes and carefully review the answers and remediation. Same for Domain 5. Then do a longer exam or 100q Timed quiz with no filters on domains.
If i have studied well, and score well on all my domains, I am ready.