For those who co-slept, when did your LO start consistently sleeping in own room?

[Neferet]

We co-slept until Isaac was five. He's been sleeping in his own room for about 6 months now. One day (first time my bf ever stayed here) he decided he wanted to sleep in his own room for the first time. Took a while for him to go to sleep without me in the room, but now I just put him to bed in his own room without having to stay until he falls asleep. =]