Glad to help. I love how supportive this community is, and you both will find you’re not alone in your feelings. The learning curve is steep - including learning your own body’s responses. It’s only been a matter of days - things will connect with time Some of it is frankly trial and error and it can take time to get it right - or something close.
Doctors usually recommend two devices: continuous glucose monitors (CGMs) and insulin pumps. Absolutely, positively get a CGM - you can see constantly where your numbers are - and if they are moving - rather than sticking your fingers each time you need to know. Dexcom and Freestyle are the big players. Dexcom lets you share your numbers, which you both might find helpful, at least at first. Freestyle might too but I’m not sure.
Imsulin pumps are considered the best way to manage diabetes, and there are people who simply cannot manage lows or highs without one, so for them it’s a must. But not everyone has that level of need, not everyone wants a pump, and frankly some people do better on injections! Your guy just had a crisis but it remains to be seen where he falls on that spectrum once things are more “settled.”
I’ve had Type1 for over 60 years and while I love technology I believe in knowing how to “go old school” as well even if you do choose to embrace it. His choice of course but learning to manage on injections is a good skill to have. A pump is an investment and you typically have to keep it for 4 years (with the exception of Omnipod) so if it’s an iron and not an absolute necessity it’s best to go in thoughtfully and certain you want it.
Your guy’s a hiker so his physical fitness served him well during his emergency. He was in a better place to start than someone who has always been sedentary, and I imagine he’s already conscious about fitness and eating well - that will serve him well. There are some other hikers on here - here’s a link to a discussion. In time he He’s may well be able to get back to it at the same level as before. T1D and Hiking - #6 by MatthikesT1
I’ll let you get back to counting down the hours to his arrival. He’s blessed to have you. Happy reunion, and take things one day at a time. I’ll keep him and you in prayer if you like.