I would not mix the food. You could give him a tablspoon of wset a couple of times a day as an appetizer, then leave dry out all the time. the more you cater to them, the pickier they become. Find a food he likes and stick with it.
Dogs do not need variety, they are happy eating the same food every day of their life.
Mine were picky as puppies, and at one time I would put 5 different dry foods out for them at one time, to see which ones they would eatr the best. they eventually settled on Royal Canine.
I give mine the wet twice a day, and right after they eat the wet they go to the dry and eat, so I think it is just enough to whet their appetite and make them hungry. they only get a tablespoon each. |