With children I personally would like to see them go straight onto a pump at diagnoses...
There is several advantages firstly you only got to put your child through an cannula insertion one in every 2-3 days, unless there's a problem, so less stressful both for the child and the parent..
You only have to convince child the once to except the need of a piece of equipment, instead of getting them to except the need of injecting several times of the day then at a later point getting them to except a pump...
Introducing insulin pump therapy is no different than introducing injection therapy.. The carb counting is the same..
With pumps parents can start with the basic menu, a straight bolus dose, the pump basal can be set by the DSN, as the parents confidence grows then the other features of the pump can be introduced at the speed the parent is comfortable with...
Far better to learn one regime, than having to learn two..