I can't be much help here because I am just starting my prepwork, and Psych and Soc is easily my biggest unknown. I think the general consensus is that most of the psych/soc prepbooks have some pretty significant shortcomings. I have heard TPR is worth checking out, but obviously you don't have that.
I have the TBR book, and I will probably do the problems in it just for practice on psych/soc passages, since they are hard to come by. From my perspective, the most widely praised resource for this section is the KA videos paired with the MCAT subreddit notes document which you can find in the sidebar over there. That is what I am focusing my studying on! We'll see how it works out.