Will 20mg of accutane for 6 months be enough to cure my acne?

I'm at my 3 month mark, and I'm starting to clear. I only have a few active spots now. I've been reading about how 20mg isn't enough to cure acne, and the possibility of it returning is pretty high, is this true? I'm stressing more than I think I should be, and I think I'm going to ask for 40mgs my next visit. Any advice or answer will help!

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