I loved bugmom's advice about adopting a really hungry dog! When I stopped laughing, I realized what a sensible suggestion it was.
What you need, Tanya, is a dog in the adolescent stage of its growth when dogs eat their owners out of house and home. Or, perhaps, a rescue dog from a shelter who celebrates its good fortune of finding a good home by eating everything in sight.

You say Hans is a mini schnauzer. Well, one of the TV vets here says that smaller dogs can be notoriously fussy & picky & difficult for feeding. One piece of advice he gives (to whip up the dog's appetite & get it tucking in) is to put the dog's meal BRIEFLY in the microwave oven. Just enought to warm it so that the smell of the food is stronger. The vet says that dogs are greatly influenced by the smell of food...rather than the look of it.
Or you could take up yoga & practise it while you're down on the floor helping Hans eat!