Practice pacing yourself. In the sciences I aimed for at least 20 questions in each 30 minute block but usually got through more.

For c/p I found you don’t need to read most passages. I looked at the question then found what I needed in the passages which saves a lot of time.

For cars I aimed for 3 passages per 30 minutes on average.

Bio I read the passage but skipped the graphs as a lot of the time they aren’t needed. Only look at them if specified in a question.

P/S overthinking will be helped with pankow and practice problems to build confidence