What helps PCOS belly?

My belly looks like I'm 8 months pregnant and I'm having trouble losing weight. Is there any supplements at walmart that will help with PCOS belly? Does Inositol really work for PCOS? What about those weight management gummies you can buy at walmart? Do they work? I need suggestions and pointers to point me in the right direction. All my doctor says is to do the low carb keto diet, he has been saying that for two years. I'm stressed not able to fit in clothes due to weight gain and my stomach big as i look 8 months pregnant.