Feeding Situation

I have 6 cats. Molly, Dory, & Ophelia are free fed downstairs. Damita, Twitch, & Lily are upstairs. Damita has food allergies, so she cannot eat any food the other cats have. Twitch & Lily are free fed because of Twitch's health issues. Twitch & Lily's food is on the dining room table. Apparently, Damita can now get up there.

I have to come up with a new feeding situation for Damita, Twitch, & Lily. Any ideas? I must continue to free feed Twitch & Lily, vet's orders.

Is there a room that she can't get in? or maybe keep moving it around?

I bet her food radar is sharp, she probably zeros in when she hears food being poured