Nap time for 3 month old

Good day all. I’ve a 3 month old. I’m just concerned as he doesn’t nap as much. He is always napping for 20 mins only during the day. Though he naps frequently, it only lasts fr 20-30 mins. He sleeps through the night though. I’m a little worried plus concerned as I understand babies his age should be napping longer. Is this something I should be worried about?