Try flavoring it with a little peanut butter, canned pumpkin, a few peas or green beans.
how do i get my 3lb teacup yorkie to eat his dry food in the morning, even if its not a scheduled time everyday he won't touch it at all?
Maybe it's too hard for him to chew. Add a bit of water to soften it or canned pumpkin like Hippy suggested, but be careful with how much pumpkin you give him it may give him the poops! You could also mix it with a bit of canned food.
Are you getting the dry food for toy breeds? My Yorkie likes tiny little pieces of the dry food. Little dogs are very picky eaters, if you're also giving him treats he may just not be hungry. Try a different brand of food or even mix it with a little bit of canned food. Petsmart will give you a refund on a bag of food if your dog doesn't like it.