OK- I too tried to put my LO down earlier than normal last night- I put him in bed at 7PM- same thing- would not sleep- finally I got him out of crib at 8:30 + he ran pell-mell up and down the hallway giggling for 20 mins. He was sound asleep in his crib at 9 PM... ARGH.
Then he woke up at 5:15 AM - I think for us, he's discovered that Daddy is up at 4:50 getting ready for work and he hears the kitchen sounds and wants to see Daddy...sigh.
This wasn't happening over the summer when we had window fans going?
Maybe he benefits from white noise, but I don't want him to need white noise to sleep...
UGH Mukta- glad I'm not the only one...