if i do put the plain yorget in with the wellness and he does not eat it right away will it go bad if its left out for a period of time also do i keep mixing his other food in with it on the bag it says for 10 days to mix it start with nmore kibbles and the over the days decrease it and also how long can a 6 minth old pup go with out eating or are they like us they will eat what ever is there so they wont starve
thank you so much