And, when you do, kids will sometimes challenge your choices and your rules. That's true whether they have diabetes or not. Be calm and stick to your guns. It's not helpful to the family or the child to let short term concerns about blood sugar disrupt the reassuring and predictable flow of family love and discipline. Learn the tools to manage normal fluctuations in appetite.
Static insulin doses and set meal plans are terribly difficult to manage.
Not impossible, mind you. Learn the tools like carbohydrate management, the tricks of snacks, and insulin adjustment so that you can go with the ebb and flow of appetite and mood. This is the knowledge you need to let kids be kids. I hope this answers a few questions. It has a much more complete treatment of the subject.