We had to stop DS brekkie routine cos he was having hot cross buns after easter had happened
And so we just stopped buying them he wasn't happy but if they are not in house he can't have them
He was 9 {last year} so this year we had them for easter holiday and when school started again he went back to wheetabix {without sugar}
he has school lunch and chooses very healthy food {no turkey twizzlers are there}
It is entirely up to you of course
but if you want to know MHO you are in control