it was forwards. he also removed bone from my jaw which im pretty sure has contributed to my sagging? do you think chin lipo would solve this or is a face lift the only thing?
Yes. That's what I said prior: Removal of bone from jaw would contribute to sagging.
If ALL he did to the chin itself was advance forwards, then I would not suggest reversing it with genio in opposite direction (backwards). Risk is loss of more soft tissue support.
Also, review the illustration I posted about what they can do in V line surgery to the chin and check your records and scan to see IF he also removed a segment from the chin.
As to lipo 'solving' the under chin problem, fat would not be the only soft tissue that lost support from removal of bone. Lipo would only work for subcutaneous fat (fat directly under the skin). It would not work for loss of muscle support nor for any other types of various tissue found deep below the surface muscles of the under chin area.
Face lift procedures redistribute tissue so they 'cling' better to the bone structure and are sometimes done after these 'V line' surgeries when too much soft tissue support is lost. If on what ever SCAN you have, like if it shows the new bone structure and you like the bone structure from the surgery, a face lift surgeon would be the type to consult with if you wanted your soft tissue to be redistributed to better confirm to the shape of the new bone structure.