I had all the symptoms of pcos so doc concluded I had it, but wasn't confirmed by actually looking. Also had all the symptoms of ir- not sure what the doc checked to confirm that, it was awhile ago though. Yeah weightloss solved everything for me, all symptoms went away, though I think it was more diet specific ie completely organic food, no potatoes breads wheat etc etc- rather than the weight loss itself. I eat nothing that has a negative hormonal effect now. And am a strong believer in short fasts to kick start the body.
One thing with skipping cycles with me, I wouldn't get a period all autumn and winter, once year was 5 months! turned out I had really low vit d, goes hand in hand with carrying extra weight too, so that might be something to look into if you haven't already.
I had weight issues in the past, and essentially the estrogen promotion for extra fat acts like birth control. I dieted and dieted with weightloss, but no change to cycles. Eventually I went on a fast, and honestly it must have given my body a well needed break from all the diet related imbalances, I have strong ovulation every cycle now, a bit of variation, but much better than not ovulating at all!
I really think it comes down to accurate nutrition rather then just general weightloss, especially if you want to have long term benefits
copied this from some of my other posts