I had a little trouble getting my first batch of blues to start pinning last week, but following a suggestion I moved them near (but not in front of) a fan that is always on to provide more airflow. That did the trick and they started pinning the next day.
Also, don’t give your oysters too much moisture. You want to spray around them but not directly on them or the mycelium, as that can lead to problems. They don’t really need much, and in your conditions they might not need the spray bottle at all.
Great start though, post progress pics! I’m anticipating harvesting some blues by this weekend if all goes well.