Postpartum periods

I’m 15 months postpartum and I still haven’t gotten my periods back. Granted before conceiving i didn’t have periods either. I was told I have PCOS and I was put on metformin. I finally got a period and was able to get pregnant but I haven’t had one since having my baby. Before getting pregnant I was also overweight. I weighed 211. My highest pregnancy weight was 242. I started doing weight watchers when I was 9 months PP and I’m now down to 171 pounds. So that’s 71 pounds down from 242 but 30 pounds down from my lowest PP weight of 201 (yay) but I thought losing weight would help bring my periods back. I still want to lose another 20 pounds so maybe it could help? Idk. Has anyone had a similar situation? Any tips? Thanks!