Tracking my ovulation

Hey guys we’ve been trying for a baby for 4 months but really struggling to track my ovulation as periods are scattered can go up to 46 days between. I have polycystic ovaries and endometriosis but docs won’t investigate until over 12 months trying? I do have a daughter that’s 6. Does anyone have any help? I’m using the ovulation kits atm. Tia 😊