What can be done to treat post cosmelan skin darkening ? Can we do other treatments to treat post cosmelan skin darkening?

I undertook the Cosmelan peel on 19th November roughly one month from now. My skin color has turned darker after the peel and I have an Asian/ Indian skin colour. I started getting acne again and I am currently on Accutane. I was told by the Cosmetic Clinic that there is a minimum six months wait time to jump to any possible external peel or treatments. Wanted to confirm the same from you as an expert opinion. Can I jump to any other treatment to lighten my colour? Eager to hear from you. Thanks.