How much time does one need to wait after a mini-facelift to do a sliding genioplasty?

You have correctly surmised that submental soft tissue chin pad reduction with submental/neck liposuction would be a good approach for your concerns.

You can have a genioplasty revision, but it would involve another osteotomy. It is hard to tell without any photographs to go on, but depending on the desired look, shaving down might be easier. Or possibly a partial implant to help with the imbalance.

Your facial skeletal structure is fairly complex and it’s worthwhile getting a full comprehensive evaluation. I don’t think an implant or sliding genioplasty will be sufficient. Your chin already has substantial forward projection with a deep labial mental angle. At the same time you must lik...