I am waiting to get my yorkie puppy

. I want to start him on a good raw diet. I have seen and reserach so many brands out there. I was leaning towards Natural balance but was not too sure. I wanted to know what would you guys recommed in here please

Also since he will be about 10 weeks old How much do I feed him and how many times. I know I have read 3 times a day but how much. I know I have to gradually introduce the new food to him and I would have to start with the food the breeder is currently on with him first at least the first 2 weeks. Any suggestions ???