Getting ready to ttc again!

Hi! I'm trying to get ready to ttc baby #2. Small backstory: I've had pcos since I was 14 (I'm 25 now), diagnosed with type 2 diabetes at 12, and my periods are few and far in between. I'm on provera right now since I've not had one since oct. I know I need to start charting again but what are your suggestions to regulate my cycle and get back on track. I'm on metformin and trying to lower my glucose. I've been exercising some but I need to step it up. I just know we started ttc too early the first time as I was not ready and it took 2 long and aggravating years and I don't want that again.

Thanks!