The tech part is mostly phone apps like MySugr (I really liked this for our son until he got his Dexcom cgm). It makes tracking data very simple and fun for kids. If you can afford it, upgrade to the Pro version for more options ($2.99/month). He already has a pump, which is great, we’re still waiting for ours. Not sure which cgm you tried, but they’re not all equal. Our diabetes nurse educator is type 1 and has tried most of the pumps and CGMs on the market, and has told us she preferred the Dexcom over her current cgm, which is part of her Medtronic 670 set. I’m sorry it’s been so finicky for you and your grandson.
As for resources, this site is one (check out the different info packets available as PDFs. His primary doctor and endocrinologist, as well. We have already taken our son to a podiatrist because of concerns over minor ingrown nails with infections. Beyond that, depending on your location, his school nurse and other families with T1D kids (our middle school has about 5 kids and a teacher who is T2. Also, if you’re feeling like you need to focus on your or your husbands health for a day, ask if your grandsons friends parents are willing to keep an eye on him so you can concentrate on your own well-being. If you fall ill, you’ll have a much harder time managing the situation for all of you. Alternatively, church congregation members might be another part of the picture. And consider talking with a social worker to find more support, either insurance or funding to cover costs, anything that’s available. Some hoops are worth jumping through to get some extra support, you’ll have to decide for yourself on that one.
Type 1 is “absolute” insulin dependent (honeymoon period aside), and type 2 is “relative,” in that it means your cells needs extra insulin or you have to limit carbs, either by dietary changes, medications or both. Poorly managed type 2 folks can end up being virtually like type 1’s, and sadly it seems to happen pretty often. In nursing school I was told that “type 2 diabetics can’t go into DKA,” but instead end up with a similar, non-acidotic condition called HHNK. This isn’t really the case, though. There are many nuanced differences in managing the two types, but the most significant is, of course, that you don’t need insulin, whereas your grandson does.