Having a low reading is good. Too low, and I wonder if you don't have any liver glucose being made during the fast?

Type I diabetics typically have very low insulin levels..if any depending on severity.

But your other markers are good, so I wouldn't worry.

If you get numb and tingly when you are really hungry..sweating, confusion, then I would suspect low blood sugar.

really low is a problem... so that is all you have to look for.

That huge sleepy problem after eating is an insulin reaction. It comes from a huge spike in insulin release. It is less with less carbs, and smaller meals.