Well, not steps exactly. I mean, we all know that M is a very advanced baby, but she's not quite that advanced yet.
But she's moved from her baby baby bed to the bed which she can conceivably take with her when she moves into her first apartment (though I hope that she'll want a bigger mattress).*
When she was born, we got a pack-n-play with a newborn napper attachment - it was a nice, cozy little thing for her to sleep in. I figured she'd get too big for the napper, and we'd just have her sleep in the pack-n-play, and perhaps skip the whole crib thing for a year or so.
But the weight limit on the pack-n-play (unless you put the mattress all the way down to the bottom, and then it's just a play pen by another name, and you have to bend completely over to put her down and pick her up) is 15 pounds.
So now she sleeps in a crib, and looks small.
Also, she seems to have liked her napper - last night there was lots of rocking and grunting and thrashing and escaping from the swaddle and waking up every three hours thinking that a snack would be nice. But when I visited my parents, she did that for the first few nights, and then settled down, so perhaps this will work itself out.
*The new trend in baby beds seems to be to make them very, very convertible, so that they are first a crib, then a toddler bed, then sometimes a day bed, which seems to be the toddler bed with fewer of the sides, and finally a headboard for a full bed. I guess it makes sense, but it seems weird to take your baby bed with you when you move out of your parents' house.