Stop rereading lectures. Turn one lecture into exam answers this week.
Most students reread the lecture and hope it sticks. That is why they freeze on the exam.
Do this instead, on one lecture, this week:
Understand — write the claim the lecturer actually made, in one sentence.
Practise — answer one exam-style question from that claim, timed.
Revise — the next day, answer it again with the notes closed.
The Exam System is built around those three steps: coach, 10-lesson course, Weekly Tactics, Study Floor. $9/month.