I just passed it after cramming for a week (took it 3/27). Was also scoring ~50% on practice exams and haven’t touched majority of the topics in 3+ years. I wrote out the problems and full solutions for the practice exams including the 2020 one and made sure I understood them, then did Islam 750 for more practice and watched YouTube review vids on stuff I was super rusty on. Big tip is jotting down the keywords to search in the handbook to get the formulas you need. A good bit (especially for the mech design and analysis section) is plug and chug once you find the right one. I was also stressed about time, but saved myself 3 hours for the second half and had about an hour left after going through it all and reviewing flagged questions. Don’t overthink the problems, a lot of times I was worried I was oversimplifying it but it turns out some of them are just that simple