Overlanding for me was a nightmare at first. Type 2 with resistance to insulin ( I have to say I have a hard time with my diet) . My first issue, offroading was an activity that caused me many hypoglycemic reactions.The heat and walking up and down hills caused sever blood sugar crashes , therefore I carried dextrose and other supplements. Now we all know that when I overland I also off road, and you never know how much energy you will be pumping out. So my blood sugar was all over the place. My baseline was not suited to this type of activity. In Canada if you happen to have a specialized doctor, this is gold. I have to go to clinics and no doctor will treat the patient just the symptoms,
Finally I got off the baseline and started to reduce my carb intake (Still working on this for the last 2 years) I worked seated all day, mu job is stressful and chaotic at best, so I eat to compensate.. But when I know I will be offroading, I will have a good breakfast proteins, veggies, and 1 slice of low sugar bread. A small orange juice ( my treat). Then I compensate with some fruit based on the level of activity, a mixture of nuts help as well.
Now just to be able to stay on track with this low card diet..
Hope this can help (been a diabetic for the past 30 years.