I'm changing my 7 month old Bichon to a more high quality dry food. Since Thursday I've been mixing a bit of the new food in, but he picks the new food out and leaves the old behind never coming back for his 1st meal. On his 2nd meal I just give the old food back to him and he finishes it off. How do I get him to finish the 1st meal with the old & new? I heard when changing food you want to do it gradually.
