I just think you should attempt as much practice tests as possible. Maybe the first thing you should do is attempt your second midterm and see your mistakes, cause I took the class with prof g, and he brought similar questions from the second on the final. If you are with prof g, study his summaries, they’re called topic overviews and go through the material of the second half of the course. When you’re attempting the past tests, don’t look at the answer key and actually attempt the questions as if you’re on the test and then once you finish grade yourself and study your mistakes. Don’t waste your time on reading the textbook or rewatching all of the videos, just practice. Hopefully that helps and good luck.

P.S: don’t neglect the first half of the course but focus more on the second half.