No idea, but the premise still holds unless you believe that this procedure is unlike any other medical procedure and has an absolute recovery time. The facts are, he is 18-19, in peak physical condition, with the best medical facilities, Dr's, trainers and equipment can buy. Coupled with a kid that has an immense desire and dedication.
So no, I push back that there is some absolute standard recovery time that regardless of the patient , its always the same.
This doesnt even get into the severity of the injury. We have no idea how his compares to someone else even if its the "same injury"