Y do you have this dog so early. This is the time where he should b spent interacting with its littermates. Taking a dog this early can cause behavioral problems in the future. Not to mention it not gonna learn any bite inhibition.
All I can say is at this stage its gonna b socialization with people and other dogs at least for the first couple of months. This is where trainers and vets don't c eye to eye. Socialization is everything. Training commmands is just a bonus