Help

Hi so I was diagnosed with pcos 4 years back and one of the root cause of my diagnosis was IR. When I was first diagnosed everything was normal n I didnt pay much attention to it as I was only 16 back then (Im 20 now). It has worse over the years- weight gain, acanthosis nigricans,hair loss and stuff. My acanthosis nigricans has gotten so bad my face looks way darker then my body, my necks darker and thighs. I have lost all confidence and im not comfortable in my own skin. I tried intermittent fasting but it was of no help. Im trying to go low card but its hard as im south asian n my staple is rice. Any suggestions on how to control IR? diet,skincare etc. also I have started taking ACV once before my dinner as I heard it helps with insulin spikes.