K.G.
We put our boys in the same room when the oldest was 2.5 and the youngest was a year old. It went fine and I think that they adjusted really well. We tried to get them excited about it. We did naps first for a bit and then went to full nights. We were lucky though because both slept through the night very well since they were about 4 months old or so. Now, my boys are older (4 and 5) and love sharing a room. They are very close and sometimes it is hard to get them to bed because they are up talking and reading to each other. Good luck!