Face Has Completely Cleared Up on 30 Mg of Accutane a Day. Do I Increase Dosage?

I have been on 30 mg of accutane a day for 90 days (3 months) and the only real side effects are a bit of dry skin around the mouth and of course the damn lips. Nothing bad. I tolerate accutane very well. My question is if I can increase my dosage to 60 mg (so I can finish earlier) without dramatically increasing the side effects. If I get a bit more dry skin I don't care and I am willing to make that sacrifice to finish quicker. Or should I stay on 30mg for 10 months? I am 60kg, 24yrs, 5'11.