On a low dose of Accutane. How long do I need to wait before undergoing hairline advancement surgery?

Hi, I've been on 10 to 20mg of accutane daily for the past 3 months and this month would be my final month on accutane. Based on my research it seems that doctors generally recommend that surgeries are performed 6 months after completing a cycle of accutane. However, given that I've been on a relatively low dose of accutane, could I wait for a shorter duration (e.g. 3 to 4 months) before undergoing surgery? Also, is there anything I could do to get accutane out of my system faster?