I hate to sound like one of those bragging moms....but....my baby is awesome!!
After being up every two hours like clockwork with #1, sleeping the entire night at 4 months seems totally impossible.
BUT...this little sleeper boy has proved us wrong. He loves to sleep, nap and be happy in general. We had him sleeping with us for the first months and I then started to put him in his own crib for the first part of the night because he was a little bit of a light sleeper for that first span of hours (when we adults were still awake and somewhat noisy). After a few nights of that...I woke up at 5am, after putting him down around 9pm, and ran in there!! Sleeping soundly! After that the length just got longer and longer. The last two mornings Dexter has awoke before Emerson does!
An added bonus...when you go in there to get him after hearing his waking up chatter... he squeals, throws his arms up and gives you the biggest smile!
This occurance and many others have made pretty much all that worry and anxiety I had about 2 kids melted away. Yes, we have our hairy times for sure, but this little man is so happy to be alive. He's recently started really full on laughing and giggling at Dexter too so it's been pretty fun to see them play together and love each other.