After studying for 2 months using the STC textbook, I used practice exams more than anything else. My advice is to dig into the hardest parts conceptually first. If you can understand derivatives, bond yields, and the other calculations, everything else can come after. Memorization is beneficial for state and federal rules, and the best way is to spam questions and roll through the question banks.
Note: for those who've passed, did you feel like getting the "pass" on the screen after submitting was the most anticlimactic and nerve-racking moment?
The final point is that confidence is supremely important. I believe that passing is in large part knowing the material, but also getting luck question wise. I averaged in the high 60s to low 70s before the exam week and then jumped up to a 78 and 86 in my last days before the exam. Things can change in a jump! Best of luck!