Broken Arm Recovery

I'm working with a young fighter whose recently broken his forearm after being kicked on it in training.

He has just had the pot removed and the hospital staff have told him that he can't sustain any contact on the arm for 3 months.

In my experience medical professionals tend to overestimate the amount of rest and recovery needed for any injury so for this reason i am mistrustful of their advice with issues such as this.

Does anyone have any experience of this and are you able to shed any light onto why so long or if the staff are being overly cautious?

It was a clean break across the main bone and he's had the pot on for 6 weeks.

Any insights would be greatly appreciated.