What are your fasting BG levels? It's possible you are in the early stages of LADA. I was diagnosed 4 years ago, with an AIC of 7.2. I had high spikes within an hour of eating even a small amount of carbs: (180+) but was down to non diabetic levels after one to two hours.What I have heard is that the first phase insulin release (after eating) is usually the first to be affected. My fasting levels remained totally normal for years. If you are not insulin resistant, it sounds like LADA to me. I eat a low carb diet and use small amounts of insulin to prevent the spike after eating. When we spike high, if we still are producing insulin, we produce more than is needed and that causes the reactive hypo. I have always had reactive hypoglycemia, even as a young child I would get severe headaches if I was hungry, and would eat something high carb like bread or a banana and feel better. But when I developed LADA, and had impaired beta cells, I was swinging widely from high to low, feeling very tired, and gaining weight from the excess insulin. Once I cut down on carbs, and later started on insulin to keep my BG levels more stable, I lost the extra 30 pounds and am back to my high school weight.
Has your doctor considered you might have Type 1? Antibody testing confirmed it for me. Originally it was thought I might be Type 2 but even with the few extra pounds I was still quite slim so we did more research and realized it was LADA.