Nerve damage jowls and chin liposuction, 24 days post surgery. I can’t lower my bottom lip when smiling.

The combination of neck liposuction and Facetite tends to increase the risk of temporary nerve dysfunction. This can occur from either the manual trauma from the liposuction or the heat from the Facetite device. I have seen several cases of temporary nerve dysfunction with this combination of treatment and the nerve was completely recovered within 3 months. 25 days is a rather short amount of time and so I would allow for more recovery time. There is no treatment to speed the recovery. 

Nerves of the face can be affected by treatments like liposuction or facetime. When that happens, the nerve healing process takes 1mm a day. Therefore, healing process is slow. 
Patients with post surgical healing issues should adhere to the recommendations of the surgeon that performed the operation. 

Call you doctor and make sure he or she is aware. THere is nothing that can be done to speed up the process. Nerve healing or Wallerian regeneration is a complex process that has been studied for decades. If it were a large nerve that was cut you can go back in there and reattach it manually. Otherwise its a matter of the nerve sheath regrowing and conduction to the muscle starting again. This takes time and your doctors job is to walk you through the process.