CO2 and erbium leaser vs surgery instruments for removing bumps after labiaplasty surgery? (Photo)

I did 2 labiaplasty Surgery in 2018 using surgery instruments. After the second surgery I had these bumps on the surface of the skin and I think it occurred from the stitches.It cause itching and burning sensation. I consult my surgeon and he advised to remove it by CO2 or erbium laser. I have concerns regarding the recovery time and if it is the right method as I feel that I am exposing to high heat. Also will I need for stitches ? if I remove it either by the leaser or the surgery instruments