So why did we stop co-sleeping? I think there were a number of reasons (and actually, she came into the bed with us almost every night when she woke up to nurse at around 2 a.m. or 5 a.m. anyway for months after that). She stared to creep under the covers and I was afraid she as going to smother under there. And she started to creep toward the end of the bed while napping sometime after that, which meant unsupervised naps on the bed were right out. I know some people put their beds away and keep the mattress on the floor, but that's just not my thing. If I had my way, my bed would be ridiculously high up.
So how did we start putting her to bed in her crib? Just by doing it, I guess. Like I said above, the crib was right by the bed, so she didn't have to change rooms and could still see us if she woke up in the night. That made me comfortable, though it may or may have not been a comfort to her. After a while, when Babby started waking up more and more frequently during the night, we realized that my nursing her when she woke up was just encouraging nighttime waking. Yes, I could have nursed and put her back in the crib, but my brain is not exactly on at 3 a.m. so any time she woke to nurse I'd just bring her in the bed.
We nipped that in the bud by soothing her back to sleep instead of nursing her back to sleep with the caveat that if she woke up any time after 4:40 a.m. I'd take her in bed and nurse her. That worked well for months, until she started pushing back waking times again. And did I mention that nursing meant latching on for about three minutes? Yeah, not hungry. If you haven't already guessed, we started soothing her back to sleep at 4-5 a.m., too.
Somewhere in all that, I started having some crazy days where I was working until one in the morning and waking up to work at five in the morning, so I started sleeping upstairs. And then the BabbyDaddy got some major dental work done and was taking happy pills, so he joined me upstairs. Our not sharing a room with Paloma happened pretty organically, which was nice. Not having us in the room with her didn't seem to bother her, and since she was sleeping through the night in her crib, there was no problems re: having to go in and comfort her a zillion times. The only problem was that our bed was still in her room - a room that was once ours but was intended for her for a while anyway. The final step in the bassinet to bed to crib to bed to crib odyssey was our moving our bed into her office and bringing her nursery furniture up from the basement (and painting her room, of course).
Okay, I guess this wasn't terribly helpful as a guide to transitioning any baby from mama and papa's bed to a crib because our situation was pretty specific, but I figured I'd post it anyway. Good luck, parents transitioning to cribs!