Is 6 weeks enough for REG?

Some background: I’ve been burnt out since I took AUD and getting into reg has taken me a while. I’ve gotten through R1 & R2, and 75% of R3. I’m scheduled to take the exam on Sept 16. I’m gonna be done with my masters on Wednesday so starting Monday I plan to study more seriously because I am the kind of person that works better when I know I have a time crunch. Tax is not my strong suit but after doing enough MCQ per section I get the grasp of things relatively quickly. What do you guys think ???