Yep, I'd stick with what the pup is already eating for about a month. Then if you want to switch, any meat based kibble that is small with around 30% protein should be fine. I find my small dogs don't do good with lower protein. A few decent brands that come to mind with small kibble are Ziwipeak, Earthborn Venture, Annamaet, and Farmina. All foods my Chi has done good on and I feel are good quality. There are plenty of others out there but those are what come to mind. Good luck with the new puppy. They are a ton fun!