Is he going to be monitoring this with just checkups? Or does he get a monitor? DH skipped the "pre" diagnosis (had really good blood sugars for years until suddenly he didn't, but...it turned out that there were other things going on with him, and it's totally possible the blood sugar stuff was just a symptom of that, b/c there's no way he could be diagnosed with diabetes at this point, every sign and symptom is gone without medication) and got a monitor, and that was nice (though painful for him!) b/c he could see what HIS body did with specific foods.
For DH, cinnamon is a wonder drug.

I was having a really hard time in the first year of the blood sugar stuff, and at one point I cracked and made pumpkin muffins from
disneyland's recipe. I didn't want DH to have one, but he did. Despite lots of sugar and even cream cheese frosting, he woke up with a LOWER blood sugar than he went to bed with...there was cinnamon ALL in it, even in the frosting. So I try to sprinkle a bit into everything I think of.
For DH, cane sugar is basically OK, but when he gets into the corn type syrupy sugars, he's toast. Corn syrup, HFCS, and probably even corn syrup solids just destroy him (he will fall asleep where he is, 5-10 minutes after ingesting it), though his blood sugar only hits 120 or so (he is now in the 80s most of the time...has hit the 70s but that makes him feel weird).
And so on. So your hubby needs to find the foods that work for him. They like to make it sound like "one size fits all", but hubby's experience really shows that it's not.