Thank you for your reply! Yes actually the day I wrote the post he had a two hour nap ( his growth spurts always begin and end with a 2 hour nap? )and he has been eating every 3 hrs during the day and sleeping from 830 pm to 7-730 am with one NW between 3-5 just like before his growth spurt. I guess every baby is different and my 17 lbs 3 month old likes to milk those spurts hehe, pardon the pun! But really, I have no idea why his last so long! I am glad things are back to " normal" as far as the 45 minute naps I am hoping they will eventually iron themselves out ( maybe once he can go 4 hours etc) Because at night he can put himself back to sleep and during the day he goes for his naps drowsy but awake and sometimes completely awake and will fall asleep in his own but still is awake after 45-60 minutes max!