Rememebr for some people bc can stay in the system for 1 year or so after being stopped until its fully flushed in full from ones system (depending on type and body macanics). Depo on averagebis 6 months to 2 years for it to flush in full from the system. But for some people its a litttle as two weeks (which was unfortunately my case).
A reproduction endocrinologist is a better option as they actually deal with the cause of pcos which is your endocrin system.