have you tried going to a pediatrition? they specialize in babies, and might be the best people to talk to about your concern with your baby.
my son is 6 months, and the meal plan i follow is:
when he wakes up i give him a bottle, then he falls back asleep.
then when he is getting hungry again i give him some veggies, either carrots, peas, green beans, sweet potatoe, then some water.
then when he starts getting hungry again i give him another bottle,
then a few hours later ill give him either fruits or cereal, and then the rest of the evening its a bottle.
The time between eac feeding is roughly 3-4 hours or so. When my son is hungry he whines alot, i never got him on a schedule, but he never goes without food.
I usually space out a few hours in between each solid food feeding, just so he does not get an upset tummy.
But i would suggest talking to a pediatrition.
Does she eat anything during the day?