Waiting On The Derm

i just made an appointment for a dermatologist on april 9th. im nervous because i want to be on a full dose course of that accutane, and as of right now im on 20mg a day but im scared once i stop taking it my face will freak out, im not clear at the moment, i have 4 good sized zits, but they arent cystic so im happy about that. ive been taking 20mg for almost 6 months and its done wonders for me, but im not satisfied, i start college in only 6 months and wanna be clear. any suggestions as to what to bring up to the derm to convince him to put me on a full course of tane? keep in mind this is the first time im going to see him. (if i get on the full course of tane ill post pictures of progress)