I have a 8 week old loveable Yorkie named Olive. She has been with us for 2 days now. Not eating that well or at least in my estimation. Feeding her Purina Pro Plan Puppy (tiny size). She will eat a little of the food, I just this evening gave her the food with condensed milk and a little water. She will eat it out of my hand, maybe had 2-3 tablespoon fulls. Not sure this is enough. She is not exhibiting any signs of low BS....was just playing and now sleeping next to me. She currently weighs 3.5 pounds. Any guidance?