Hi laura and Bailee!
How exciting!! Some great folks will be along to help and welcome you…not so sure about the Diamond…I have not tried it myself and wasn't too crazy about what I read so far. Candidae, TOTW and Earthborn - all good foods, but all a trial/error process…there are a few newbies on here w/the same questions as to starting off a new puppy and what to feed. I do believe @punky has yorkies also
You're in a great place!! So excited for you and your new bullie, can't wait to see pics!