4 months old! (yesterday)

Report from mom: what is going on with Jack?

~ He can roll over in the crib (back to front) but only when nobody is looking! He tries very hard to roll over both front-back and back-front when on his playmat too, but so far unsuccessfully.
~ He can laugh/giggle longer, especially when we tickle him. Strangely he is only ticklish sometimes.
~ He decided to stop sleeping well about the time I posted how well he was sleeping back in September. Maybe this post will reverse the trend. He has been getting up a million times a night for the last three weeks, and a half-million for the weeks or so before that. This was about the time he started going to bed early (like 7:30 - a normal time for his age).
~ He pretty much sleeps on his side now. As soon as we put him down, he rolls to his side and starts eating his hands.
~ He now (we are pretty sure at least) indicates when he wants to be picked up by holding his arms out.
~ He loves to be "standing" - supported by us obviously. However, he needs less and less support and is getting quite solid. Apparently around 5 months he should be able to stand just holding on to our fingers. He isn't there yet, but sure is getting there.
~ He grabs his feet a lot, but hasn't quite gotten them in his mouth yet, should happen next month according to "experts." He also likes to cross his ankles when seated.
~ His hands are almost always in his mouth (for the last month or so).
~ He is much louder and seems to want to will his toys to move by speaking sternly to them. He bats at them too of course...
~ He is moving out of his 6 month clothes (3-6) and into his 12 month ones (6-12) as sizes are all over the map, it does vary quite a bit for piece to piece. He is probably approaching 17 1/2 lbs. We have our official 4 month check-up on the 26th so will know more accurately then.