DD is 11mo and seems to be less and less interested in her formula lately. A month ago she was getting about 24oz, but she keeps refusing it. We've tried several different things to get her to drink more, but she just refuses. So now we're down to 18oz/day. We only have 3wks until her 1st birthday, so I'm not sweating it too much. She seems satisfied and is growing appropriately, so I think she's fine.