Hi!
My ped. recently told me that, as they eat more solids, LOs decrease the amount of milk they drink. If she's not taking it during the day, and she's sleeping well at night, I wouldn't worry about trying to feed her more milk.
Of course, I guess I should cover my bases here and mention that you might want to call your ped. or a nurse to make sure everything's all right and that your DD is eating enough, gaining proper weight, etc.
HTH!
Hugs!