PCOS weight loss help

I was just diagnosed with PCOS about 5 months ago and was put on metformin. I’m a 17 year old teenager and I’ve struggled with body image a lot so it’s been extremely difficult on me to deal with the weight gain that I got with pcos (went from 72kg- 92kgs) I really want to lose the weight so I can be more comfortable but I’m struggling a lot, I’m on metformin but I haven’t seen any decrease in my weight and was just wondering if anyone had any tips on lifestyle changes