It's official

Last night, at about 2am, I responded to a crying Andrew and found him sitting up in his crib. He used to sit on his own as long as someone placed him in a sitting position. But now he sits up on his own. When he is half asleep.

He can also move fast enough on his belly so that... well, so that a person can tell he's moving. Unless he is thinking about getting somewhere, in which case he keeps trying to stand by pushing himself up on his toes, planting his face to the ground, and then just manages to inch backwards until he is in a corner or under a large furniture item.