how long is your baby awake during the day?

Meg • New York City first time mom!
My baby is almost 6 weeks old and he is awake for 2-4 hour stretches during the day.  Is this ok? He doesn't act sleepy even when I try to rock him and sooth him for a "nap".  Really the only thing that will make him sleep is feeding so sometimes he's up until the next feeding and beyond.