You can have hypoglycemia and not diabetes. Hypoglycemia is often the precursor to diabetes. But, some people never get diabetes.
You have to be aware of what and how much
carbohydrates you put in your body, not just sugar, as was mistakenly believed diabetes/hypoglycemia was about. Carbohydrates convert to sugar in the body.
Cereal with milk are one of the worst combinations to eat. It is about 85% carbs and sugar in ratio to protein 9and very little fiber.) There is sugar/carbs in the cereal and the milk has lactose which converts to high sugar. It is a mistake to think the amount of protein in the milk alone is enough. The
ratio of protein to carbs is just not enough for a healthy meal for
anyone, hypoglycemic, diabetic or not.
Peanut butter & jelly sandwiches are the same. TWO slices of bread, jelly, (even sugar free) with peanut butter (which usually has sugar in it,) is about 90% carbs vs. protein. People think it's a healthy sandwich because peanuts have protein, but again, the
ratio of protein to carbs is very low.
Both of these foods should be outlawed.
There is NO protein in fruits. People should NEVER eat a fruit alone. PERIOD.
Also, if you are eating pretty much carbs throughout the day, in ratio to protein, you pretty much banking all the carbs you eat.
I do try to eat something with protein before I go to bed like string cheese or a couple of nuts or something like that.
Good, but you might need more protein right before bed than that. I usually eat closer to bed time, always have protein as the last thing I eat and wake up feeling still a little full. I actually don't eat for a couple hours after waking up as there still is enough protein and high enough sugar levels in my body.
Since you are having hypoglycemia so soon after waking, you cannot go by those health experts who say not to eat within 5 hours (or whatever) of going to bed. Your body works differently. You need to do what
your body is telling you it needs. (I don't know what the thyroid and vitamin D issues do.) You can't go by what the guidelines are for "healthy" people.
If I didn't eat for for 5 hours then slept for 8 hours, that would be 13 hours without eating. By hour 13, I'd probably be in a coma.
Also, do you have coffee with milk first thing in the morning? Again, milk is high in sugar. It may be enough for you to have a sugar spike reaction, then dip a half hour later, if you don't eat anything else with the coffee & milk.