Please help, my 9 1/2 week old puppy eats very little. At 8 weeks she weighed 8.2 lbs according to the vet. She was parasite free. I feed her Nutro Large Breed puppy food. She eats maybe a handful at a time always leaving food in her bowl. I feed her 3 times a day. She is getting taller but is skinny. Last night I fed her a Nutro pupp packet of food. She ate the whole thing, but it upset her stomach (which I was expecting that). Does anyone have any advice?