My son is 3 months old and smarter than ever. He loves to know what is going on. He doesn't sleep at all during the day except maybe an hour or so...it drives me crazy. He never wants to sleep and he wakes up every 4 hours at night. He's a good baby though. I think he's teething so he's been fussy lately. He's very smart though, everything he's supposed to do at his age he's learned to do a lot earlier.