Same here, Millie only gets 1/2 a cup a day with her diet.

THe other girls are free-fed so I don't know how much they eat, but I just fill up their blue bowl (it is a 2-cup bowl) and it is usually gone by the end of the day so between the 3 girls that are free-fed, they share it all.

I assume that the 5 cups is shared among all the kitties, not for one kitty.