[Tcarnagie]

First I am not a breeder but I have had puppies that I have taken care of and nursed when their momma could not. From my understanding, they are supposed to double their weight during the first week. Some weeks they won't gain as much while others they seem to gain a whole lot. Once they start on mush food and move around I noticed the weight gain slowed down. As long as they are all healthy and nursing I would not worry about it. When you go to the vet next you can ask them about it but at this stage weight gain is what they need.