How to regulate periods without birth control

I got my hormones tested for PCOS and my hormones were “normal” but on ultrasound my ovary has a bunch of cysts on it and I have irregular periods like 6-12 week cycles. Either way, I was wondering how can I regulate my periods with no birth control because I’d like to still ovulate… If I am at all… the doctor won’t do anything other then prescribe birth control, is that really the only way? I just don’t wanna mess things up even more if my hormones are supposedly normal now