Anyone else's baby have a hard time taking naps??

Amanda
Im at a loss... it seems like several days in a row my little guy will nap with no problems. He will be on a good eat/play/sleep schedule. Usually up for an hour between feedings and naps. (He is 5 weeks) Then there are days in a row that he can't stay asleep and he is miserable until he falls asleep again. Don't know what to do.