Hi. Our 16 week old Cockapoo has been on Harrington’s dry Puppy food since he was with the breeder and we carried this on. He has not been eating all his meals but when he is at my parents during the day will eat his food.
Could also be the heat. Stanley struggles with food when he's hot.
We're on a mix of royal canin cocker food and also occasionally bakers beef and veg.
I know you're not supposed to mix but he gets bored with the same thing every day.