I am starting to get things ready for weaning and am wondering how much milk needs adding to a portion of weetabix or porridge or a similar food for baby? How much would be made up at one time? I was thinking a quarter of a weetabix (don't think I would be able to break it any smaller). Am going to express some breast milk and put in little avent containers I have but don't like expressing so don't want waste. I don't want to put 3oz in 1 container to freeze to find I only need to use 1oz. Any experience?