That's not how insulin works at all.
Insulin is a hormone that your body uses to transfer glucose from your blood into your muscles for energy.
You get glucose (sugar) in your blood from eating foods that contain sugars or carbohydrates (which break down into sugars when you eat them)
Insulin response in normal healthy people depends on blood sugar levels.
Ketosis is the opposite effect that you get from not eating sugars for an extended period and your body burns fats and lipids instead of sugars for its primary energy source.