I second the Cambridge drilling packets. While going through practice problems is great, don't forget to also review them so you can figure out what you got right and what you missed.
@amipp93 Like where in the course are the new problem sets? or where can you find the written explanations to the problems that don't have video explanations by JY?
3 PTs a week, one every other day. On the in-between days I would BR. If I noticed that one sort of problem (i.e. Necessary Assumptions) was giving me problems I would drill that, but otherwise not.