Distal phalanx fracture

I had an accident at work resulting in a crushed index finger. It's been about 8 weeks and there is minimal bone growth, the laceration is completely healed and now I'm working on desinsitizing the scar tissue. I'm an arborist and a climber. 7 years with trees and 17 years on rock.

I'm interested if anyone has any tips on speeding up this lengthy, and honestly very low, process? I'm a fairly healthy and active person with a good diet. Any supplements, particular action or activity that anyone could recommend?