5 week old being awake

What’s an average time a 5 week old baby should be awake between sleeping? I’ve been told that they’ll only be awake anywhere from

30 minutes to an hour, max. My 5 week old tends to stay awake for hours between sleeping and I’m concerned she isn’t getting enough sleep. During the day time, majority of her naps are 15 minutes to 1 hour long. She gives us about 4 hour stretches of sleep at night though.