6 month old

Any advice how to get my six month to take longer naps. He takes maybe 3 naps during the day but only nap for 20 to 30 minutes. At night he only wakes up once for a feeding. I recently went back to work and he’s in daycare so he’s getting into a routine now. I guess I don’t want him to be the only baby up during nap time at daycare lol. I know he needs more sleep than he’s getting.