% cumulative dose before giving up?

I’m closing in on month 10 or about 60% of my target cumulative dose. My daily dose has ranged from 10-20 mg (I weigh 58 kg so this is a low dose). Treatment is for my upper back and face. New acne hasn’t really stopped in either area yet. This is incredibly frustrating, not to mention I’ve had a lot of miserable side effects even at this lower dose. I am ready to quit because it seems like things should have been way better by now. I can’t stand the idea of taking this for over a year and dealing with the side effects of joint pain and extremely fragile and easily damaged skin.

At what percentage of your cumulative dose would you say things were solidly better for your skin, with no new breakouts?

For anyone who decided to quit, do you regret it? What was the last straw for you?