You’re talking out of your ass about type 1 diabetes. Type 1 diabetics stop producing insulin entirely and are 100% dependent on exogenous insulin. My 12 year old son is a type 1 diabetic. He plays ice hockey, and his blood sugar will have a tendency to spike during games without having eaten anything for hours prior simply due to emotions/Adrenalin, whereas at practice he’s more likely to experience low blood sugars.
Edit: Since I can't reply to another one of your posts below, I'm going to respond here. There's a "honeymoon period" after the initial symptoms of type 1 appear that yes you will still produce some insulin, for most patients it's about a year, but after that, no insulin is produced.
Zero-carb isn't a realistic long term solution. My son was diagnosed at 18 months of age. Feeding him nothing but bacon, steak and chicken is not particularly good idea for a toddler or growing child.