I am soon getting my yorkie baby

named Cici from a friend. She is going to be 6 weeks old and the mother doesnt want to feed them anymore. She is also eating food already...currently Puppy Chow. I dont know if this is any good but he likes it. Any suggestions on what food i should get her once i have her to make the transition from one food to the other...i need help. This is my first puppy. Suggestions will be appreciated.