6 month ago I had a BSSO to bring my lower jaw inside, to correct my under-bite problem. My doctor recommended to do a sliding genioplasty (advancement) along with it because perfoming the BSSO only can make my chin appear too weak. So BSSO and genio were performed together. Now my chin & jaw are almost completely healed, and I don't like how my chin looks. It is sticking out even more than before the surgery. I'd like to reverse the genio. Will this be too risky?