All newborn babies are absolutely different, just like adults.
They also have a certain mood when they arrive for their session.
Some babies feel very comfy, they are full, they feel nice and warm. Nothing bothers them, so they are sleeping very deep. In this case the photo shoot lasts an hour and a half, maybe 2.
Some babies are not in a good mood. They might be very sensitive to my touch when I am trying to pose them. If they are 8 days and older, they might have tummy aches and gas, which bothers them a lot and they become too cranky because of that. That means that I will need more time to calm them down and I will not be able to put them in certain positions. These kind of photos session may last up to 4 hours.
When it comes to a newborn photo session, the baby is the boss 👶😊