my kids from day one have always shared a room, at one point when I started out all 5 daycare kids slept in their own pack and plays in the same room. They sleep like a dream, I have a radio in there that has classical music on (loud) and this teaches them to sleep with noise and they adjust quickly. When they first start I have them separated until they have adjusted to the idea of sleeping at daycare - once they self sooth at daycare they are moved into the sleep room.