I'm not supporting a spouse in this, but am functionally hypoglycemic myself.
It isn't so much NO carbs, but healthy carbs. I do fine with whole wheat pasta, for instance.
I buy the sugar free everything, but not if it's sweetened with equal. The stuff in the blue package makes you "blue."
It's really "sad" for me, as I lost my sense of taste due to the injury, and very, very sweet and very red hot spicy are the only two things I get any sensation from... and losing sugar was tough. I still haven't battled through this yet, giving up one of the two things I sensed.
While I'm on the sweetness thought, I am cautious about splenda though it sweetens nicely...but there's something about it's chemical reaction in the body that causes a chlorine enzyme??? (Goodness I must be tired, can't think.)
So I'm back to sweet n low... and each time I buy a box, I tell myself when this is gone, no more! But can't seem to do it, can't seem to give up sweet yet.
I do exceptionally well with apples. They are a real pick me up and feel good snack.
I don't do bananas nor carrots, as they are not processed like other naturally sweet foods, and go directly (so to speak) into the blood stream. I think with a balanced meal they might be ok, but I just eliminated them completely, so I don't have to think.
Good wishes in this!