Our day feeds are only in the morning before getting out of bed, after his afternoon nap and just before bed unless he is sick then he asks for it more. This mainly evolved because at 11 mnths I went to a sleep school and we changed feeding from demand to after breakfast, lunch and tea and I went back to work about the same time for 3 days a week for 4 months.
What I would suggest is distraction, I notice if we are out and about for the day he tends not to ask for his after nap feed, can you delay the feed? so if she asks you tell her later and distract her with a walk or something? I am very much an instinct person and with DS try and distract and if he really wanted it I could tell hope that makes sense and goodluck.