Baby only getting 10 hours of sleep in entire day.

My dr said babies are supposed to sleep 16 hours a day on average. The last few days my baby has only been taking a few 10 or 30 min naps, and sleeping around 8 hours at night (which is great) but she just doesn't nap and she's up for the day at like 5. 😭 Is this ok?? I feel like she should be sleeping more during the day. Plus I can't get anything done... she's 5 months and a week... eats 4-6oz at a time and I hold her for naps or sometimes put her in the rock n play. She won't sleep in the crib during the day only at night