Good idea - you can use a bulb syringe, or a little regular syringe, too (they sell them at the drugstore - they're usually near the pill boxes, pill splitters, etc.) Or they might have something like them at the petstore for syringe-feeding.
The A/D can be syringe-fed, and the baby food is just the right consistency for that too. If you do it, try to aim toward the side pocket of the mouth, not straight down the throat. It's pretty messy & time-consuming (just for me to get enough into a cat took forever), but it does get the food into them, and they usually don't overtly fight it. Seems like once the food's in their mouths, they're glad to have it and swallow.