How to help feeling return after chin implant?

Hi, I had rhinoplasty with a chin implant 13 days ago. While everything is healing nicely, I am still very numb in my bottom lip. I know that numbness is caused by the stretching of the nerves along the jaw and can last 2-3 weeks up to several months. The numbness is making it very difficult to talk and smile. I am still wearing the chin strap at night as per my doctor's recommendation. What can I do to help the numbness go away? Are there massages or stretches I can do to help speed up the process?