Progressively Overloading his muscles, assuming he is doing weight training, to increase strength over time. he should not stay with the same weight for two months, unless he can perform more reps with better form over time.
She needs to put the fingertip on ice to preserve it increasing the chances of medical staff being able to reattach it. Then seek medical help as soon as possible to stop the bleeding and prevent any infection in the wound and to have the fingertip reattached.
