Nap hack?

There must be a secret I’m not getting. I have got the night times down pat, but my daughter doesn’t nap. She sleeps from 7pm-10am. Sometimes she falls asleep later but she’s for the most part in her crib by 8 every night. Nap time is a different story. She doesn’t sleep in the day for more than 20 min at a time. Do you do naps in the crib? Set times? I’m at a loss. It’s hard to do set times since she always wakes up at a different time.

EDITED to say she’s 6 months old.