This sounds like epilepsy come back and tell me if I'm right. You don't go convulsive on a diabetic onset usually always extreme cases comatose and that's what this sounds like extreme. Diabetes is very slow progression in early ages not causing extreme low blood sugars read extensive materials if you love him. I hope I could help.
Hello. I'm not a medical professional, just the parent of a kid with diabetes. Your son's symptoms sound more like hypoglycemia than diabetes. That is a condition where someone's blood sugars drop too low for whatever reason, and it's different from diabetes in both cause and treatment. I would request to your doctor to get a hypoglycemia check done. Good luck.