Aww, man. That's a bummer! Unfortunately, it's been happening. I've had to reschedule a few of my students and/or send them out with other instructors after they recover, etc. Hang in there! It'll be all worth it when you finally get to go and he gets his cert!We have a referral from our local shop and are set up with a shop there. Unfortunately he now has covid, and won’t be able to make the trip! I have postponed his dives there and hopefully we’ll be able to do it at a later date