@ Amanda
Seriously, if you are getting overwhelmed. I think your best option would be to find a veterinarian that you like and trust to work with and go by his recommendations.
Keep the puppy on whatever food the breeder has started him/her on, the pup should be at least 10 weeks old when you accept it.
You should see the vet within the first 2 weeks that you have the pup and he will advise you accordingly.
Ask the breeder for any documentation of all vaccinations, worming, vet visits (verbal doesn’t count). Failure for the breeder to provide such documentation would be a red flag, imo.
In that case I would take the pup directly to the vet for an examination the same day you pick him or her up.
Good luck
