We had the same problem with Maya and Inka, as Maya is on a diet!! We did it like this then: 1)I gave Inka her food first. Only when I saw she was busy eating, I put out Maya's dish.
2) Maya's "feeding spot" is in a corner of the kitchen, about 1 m up (on the counter). As Inka cannot jump very well, Maya's food is safe up there!