Lip Numbness Back After Sliding Genioplasty

I had sliding genioplasty 2 months ago. By 1 month time most of my lower lip and chin sensation had already returned except for the very bottom part of my lower lip which was still tingling.

One day around 3 weeks ago, I kept using my finger to tap on my lip hoping this would help to get the remaining sensation back, but the next day, my whole lower lip was tingling again!

I tried to leave it untouched since but it is still tingling. Does this means I will never get full feeling back again?

No doctor answers yet