Napping advice

Gi
My 9 week old is not napping much at all for the past week or so =/ She sleeps well at night, so I can't complain. However she's been so fussy, and I assume it's because she is overtired. Pediatrician mentioned to try to put her down 2-3 times during the day even if she doesn't nap just quiet and to try and have routine I can follow for naps. (We do nighttime routine). I'm looking for what works for everyone to get baby to nap and where does your LO nap?