We’ve tried this several times with little or no luck. I just bought some canned dog food my son’s FIL recommended but won’t try until we’re done with the salmon oil. The canned dog food is for sensitive skin and we’ll try mixing half a can in with one cup of his kibble to see if he likes it. Never run into anything he won’t eat.
My BIL had a border collie which is uncontrollable each time it eats kibble. As a carnivore (me, not the dog), I told him to feed it with what I eat (animal based like meat, fish, eggs, no plants) and avoid kibble which has too much carbohydrates to be a proper diet for dogs (for humans too, but it’s just me, lol).
It resolved its behavior problem instantly. Now that we have the real diagnostic, it’s amazing to see the effect of carbs on that dog. It can go crazy in a heartbeat like a switch after eating carbs like a banana or a candy. And it loves carbs, which is why it was so hard to make the right diagnostic in the first place.
So if your dog’s problem is nutrition, maybe avoid kibbles and see if that’s of any help.