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

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.

As far as a chin augmentation, fillers would only get you so far. Plus you have to constantly keep getting them touched up. Chin implants are good for some people, but I agree that you could benefit from a genioplasty. Not only would this balance your profile, making your nose appear smaller, it...

As long as you do not have any problems with the current placement of your jaw (sleep apnea, breathing issues, discomfort when eating...) and since your bite aligns well, a genioplasty with submental liposuction or neck thread lift would be the easier solution, and would not affect your bite....

Depending on your bite, and if you experience things like sleep apnea or difficulty eating, you could benefit from jaw surgery. This procedure is done firstly to fix mechanical issues and improve one's quality of life, but aesthetic concerns are taken into account as well. But for arguments...