10 Week old not napping

Hi!!

My 10 week old won’t nap. He will be awake for at least a 5 hour chunk during the day. He sleeps well at night (7:30pm-7:30am with a midnight and 4am feeding) and is practically unconscious at night, barely stirring, just enough to eat then pass right out again. I’m not worried about his night time sleep or even him having his days/nights mixed up. He isn’t fussy or upset during his the day, he just plays and smiles the whole time. On the rare occasion that he does nap he’ll nap around 40 minutes then be wide awake. Any ideas? Is this even an issue? Thanks!