Do you close your puppies in the room or fence? Puppies always need much time to sleep for physical growth. Although puppies will bark much than the adult dog, they could not bark day and night unless they are lonely or hungry after sleep. Make sure they have enough food, water, and toys. A ventilating environment is necessary as well. Try to play with them and make them exhausted before you sleep. Walking the puppies outsides helps to improve their social ability, so they would not bark after hearing little noise at home due to scare. Contacting with outdoor environment early benefits to get on well with strangers and other canines, which has a positive effect on going to the dog-friendly beaches or parks. However, it's better to leash them before walking dog.