Is my dosage of accutane sufficient? (Photo)

So I have been on Accutane for a total of 5 months. The first two months I had 40mg and for three months I had 60mg. The final sixth month, the doctor was going to lower me down to only 20mg (to wein me off the drug and complete my course) my question is: did I reach my total dose for this drug making it so I won't relapse? My skin in 100% clear now and has been for about 2 months now.

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