to prep course or not?

for context i have a strong gpa (4.0/4.0) (this is over first year and half of second year) and have taken a lot of background courses for the mcat (except psych/soc stuff), i've always been a hard worker but ive just been feeling super overwhelemed with mcat studying, my plan is to write aug 2025 and start studying end of april 2025. my dream is med school in ontario where i know mcat is not as important. however I was wondering for those who did take it was it helpful with CARS? is it extremely difficult to score 520+ on my own? i have a lot of friends taking these courses I just don't know if its worth it my friends have parents covering the fees for them but I'd have to pull it out of my own pocket and I don't know if its worth my money? thanks for taking the time to read this over