@jc76 I have a long history of gastroparesis also. It is an autonomic neuropathy complication of diabetes. There are mainly 2 types of neuropathies that diabetics can develop. One is peripheral which affects the extremities (think feet & hands). Sadly that is why many diabetics ended up with amputations. The other neuropathy is autonomic. This involves the nerves that control functioning of internal organs. For gastroparesis it is the nerves for the stomach. The nerves send messages to the muscles to make the organs work. My gastroparesis was diagnosed by a stomach emptying lab test. It means that there is slower or incomplete stomach emptying. From there I find out from a diabetes dietician that having smaller more frequent meals (more snack like) is helpful, like 6 mini meals instead of 3 squares. The other thing I learned is that high fiber is harder to digest and can present a serious challenge for gastroparesis. This is a shame because it is really helpful for blood sugar control! My doctor and dietician encouraged me to start small and to experiment with a variety of foods to find out works best for gastroparesis and blood sugar control. That is where a food record or diary is helpful. You and your wife already know how to do that so you are already making good progress!
One last thing. If you need to find a fruit juice that isn’t fibrous or acidic try grape juice or clear apple juice for treating hypoglycemic reactions. You can also get glucose tablets or gel that has a fixed amount of carbohydrate in it but I think it is more expensive than juice that you could potentially have on hand anyways. Some people will go with fully loaded (not diet) carbonated soda pop, but my family doesn’t keep around at all. Plus the carbonation presents a different gastrointestinal problem for a lot of people.
Hang in there. It sounds like you and your wife make a good team to support one another. (That is what a good friendship and/or marriage should be.)