The art of newborn photography is to put baby into a deep sleep so I could mold them into different positions. That is why sometimes it can take up to 4 hours just for one session.
I would better spend 2 hours putting the baby into that deep sleep rather than rush the session and get lesser images for my client.
In addition to that, some poses are not safe if the baby isn’t sleeping. And if you are following my blog for some time, you know that safety is number one priority in my studio.