I began scheduled feeding. I had a problem with Jackson not eating enough-- plus I just wanted to know when he was eating for potty times, and so I could know if he is not feeling well (I know he's not if he won't eat).
Anyways, he is 15lbs and eats 1/2 cup per day of Acana Grasslands, mixed with wet food. 1/4 cup in AM and 1/4 cup in PM. I would assume your littlest would get around 1/4 cup per day but don't quote me on that.