I took roaccutane for 3 months and stopped. Do I need to finish the treatment?

I took roaccutane for 3 months and then had to stop taking it due to a knee operation that would leave scars. My skin has been fine for 7 weeks since I stopped taking it. Do I need to go back onto the roaccutane treatment? My acne was minor but consistent for the last couple of years. The spots were beginning to leave big scars so I opted for roaccutane after all the other anti biotics failed to work. Since stopping the treatment I have had only two spots.

No doctor answers yet