Isotretinoin Treatment (6 months) but after 6 months off medicine acne started appearing again?

Hi, i started with isotroin 20mg(initially) & 30 mg(during last course of the treatment), so my treatment lasted for 6 months. After 6 months of stopping the treatment i am again breaking out , i was all glowing & less sebum was produced. Does that mean i have to again start my treatment??? My doc is in UK & i am in India so due to distance issue i am not able to connect back with her. . Pls suggest do i have to restart my isotroin treatment & are these cystic acne is because of PCOS

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