Could acupuncture fix low blood sugar that's happening in someone without diabetes?

That is not useful: Low blood sugar in the absence of diabetes or other endocrine causes is due to inadequate nutritional intake. Bottom line is that you don't eat enough or correctly. Eating simple carbohydrates like a bagel or toast or cereal alone does not provide the right kind of calories for sustainable blood sugar levels. Eat some protein and fat with every meal. Eat every 3-4 hours. Eat enough calories.

Hypoglycemia: Auricular acupuncture can be used for both hypoglycemia and diabetes mellitus. But i agree that it makes sense to take in calories if blood sugar is low.