I had a cat who got his mid section crushed by a car.
He vomited all of the time, until I started making his food.
Fried chicken livers ( liquified first)add water for a gravy. He loved it and could keep it down.
For dry food, my current cats I use a slender plastic tube. They reach their paw in and pull out one piece at a time. Slows down the eatting.