Most breeders on here will recommend you keep your puppy on whatever the breeder was feeding him/her for the first year or so. If you selected a good breeder, you should trust that they know what their dogs do best on. Large breed food is not needed for labs. Fromm seems to be a popular brand on here, but no one food is best for all dogs. If there's some specific reason to change when the pup is so little, Fromm might be a good choice but a lot of people bring a puppy home, switch food right away even though the puppy was doing fine on what they were eating, and rounds of tummy upset and diarrhea ensue. Don't rush to change foods is the recommendation.