Weight loss with PCOS?

Hey girlies! I was hoping someone could give me some advice on how to lose weight with PCOS. I haven’t been diagnosed yet but I know I have PCOS. I’ve gained around 45-50 lbs within a year and a half (that’s with some dieting and drinking mostly water) and the weight is still going up! I know people with PCOS can’t exercise as hard/much so what is the best way ? Thanks