Remember your baby knows how much she needs. Unless she starts losing weight, odds are she is inbetween growth spurts and doesnt need as much. I really cant say dont worry, as a mother you do worry. I know when my 2 yr old eats a bite and says she's full, I freak out, or when my 3 month old eats one whole bottle less that day, I think I am doing something wrong. Its natural for your child's appetite to change thru the years. Just wait until they get big enough to eat a regular meal and they have a growth spurt. My 2 yr old once ate two big plates of food, which of course had me concerned. ;) Good Luck!