Is fruit ok, then? Isn't it considered high carb food?

This is a person who has limited body awareness, so just trying to learn about their body may not work for them. And when they were under a doctor's care, they got so frustrated with all of the conflicting information, they just sort of gave up.

One of the problems with learning about their body is getting test strips to monitor their blood sugar, because of not having access to medical care. This person saw a doctor a couple of months ago and paid out of pocket, but is extremely dissatisfied with the care they got, which amounted to no more than a one month prescription for metformin and instructions to return in a month, and they're very skeptical that a return visit would produce any results. They are on the road for the next few months, so a doctor appointment isn't possible during that time anyway, but in the meantime it would still be good to try to get the blood sugar under control.

They don't really have the time for fast food much of the time, and they have a choice between what can be carried in the car without refrigeration and what is available in gas station convenience stores, which, believe it or not, is often even less healthy than fast food restaurants. Recommendations for foods that can be carried in the car without refrigeration that don't need preparation would be appreciated. Right now, they're pretty much just eating nuts and turky jerky for snacks. They've got cans of low salt soup (high blood pressure is also a problem), but most soups have either rice, noodles, or potatoes in them and are not particularly low carb.

The whole grain bread is something they definitely like to eat, but again, they're wondering about whether or not even whole grain bread is ok for them to eat.

The other problem is exercise. They don't have time to get the kind of sustained exercise (20 to 40 minutes every other day is one recommended amount I saw recently) while on the road. They are on the go continually from about 5:00 in the morning until about 11:00 at night and most of that time it is absolutely necessary to be sitting down.

Which is why it's important to find out what its ok to eat and not ok to eat.

Thanks for the links and recommended sources of info.