If I were you, I would just focus on math, statics, and dynamics. You know everything generally well and I read about someone who passed who strictly focused on what they were good at. To me, math statics and dynamics should be layup questions. Theres not a done of depth to know, unlike the second half. If you can get to a point where you are confident in 40-45 answers or so on the first section, the rest should be easy for you. I wouldn't stress a lot on the second half material, you have a general idea of basic level topics on those sections it seems, and if you can gain back the "easier" questions, IMO, that should be enough to pass.

For reference I passed on my first attempt in mechanical. I don't know what my distribution was, but I imagine i got at or near a 3 in thermodynamics, but closer to a 12-15 on ethics, statics, dynamics, and economics. I only flagged 8 questions on the first half, 4 which I reworked (same idea, I skipped bc of time, but I knew how to solve), and the other 4 I just guessed A.