@aegood, sorry to hear about your Q3 results. Just from my experience with REG using Becker, I think it is just repetition of studying the material/multiple choice until you can explain most of the concepts/rules/numbers used in each module. Also, setting a target % correct on multiple choice questions can surely alert you to topics that you are good at or need more work on.
For REG, I wrote my notes once and then went though the multiple choice questions after reviewing each module. I also wrote notes about why I got multiple choice questions wrong, got things right, etc. Then I redid this process again. I made an effort to understand everything in the module before moving on. I then redid my multiple choice questions trying to get at least 80% correct. My scores went up at least 10% from doing this process. If I have more time, I would do this process again.