[matese]

I can't recommend a food, food is not a one brand fits all. Just want to say,

A dog will never starve itself.

Have you taken your pup to the vet for this issue, there could be an underlying issue rather than a picky eater.
Also, these lil mites have us well trained, could be refusing food because you keep changing it.

Stick to one brand, when he gets hungry enough, he will eat.

But I would still take him to the vet for a full checkup.