Because of spending too much time rereading passively, you end up never actually testing recall under pressure. Reading notes for hours feels productive but the score stays flat because recognition and retrieval are completely different skills. Switching to active testing even for twenty minutes a day tends to shift things faster than another full review session.

Ensuring your practice materials are up-to-date with the exam syllabus is more important than the number of hours you spend preparing. AWS recently updated the exam content, and many free online resources are still outdated. Find free AWS practice exams here ​https://cloudcertprep.io/​​​ The real reason for poor scores is preparing for the exam with improper distribution.