Can you subtley control portion size by buying her "special" smaller bowls/cups for her to use?
Nah, at the moment she wants 'adult bowls' 'adult cups' etc .... "cos i'm big".

awhile ago, i was pouring the cereal into a jug and then she could pour it into her bowl. that could work, just means i have to lock up the main box before she helps herself. I only have a certain amount of food, its enough, but when its gone i have to get inventive at the end of the week.