Another comment from Facebook:
If he uses any devices (pump, CGM) and is tech-savvy I suggest he get in touch with a local rep who knows all of the local endos and their abilities and demeanors.
" If he’s really into hockey (seems he is) I suggest he also take a read at this post on TuDiabetes (and the YouTube links in one of the comments) that I wrote back in the day when I had no kids and a little hair. Ice hockey + Insulin Pump. Any suggestions? "