2 months and sleeping problem? or WHAT??!!!

H21eather

My son is two months old and 2 weeks, he has started staying up all day, VERY short naps here and there then sleeps almost through out the night waking up to eat and get changed.. it almost seems like he isn't getting enough sleep or has interrupted sleep, because he doesn't seem to stay asleep for a while this has been going on for about a week and a half now... is it

1- trying to get into a schedule
2- starting to teeth
3- growth spurts

 What could it be??