Making naps longer

Keven

My baby is 9 weeks old and our pediatrician said he should be taking longer naps but i’m not sure how to make this happen. He will take cat naps more than anything, 15-30 mins and usually 1 nap that’s about an hour long a day. The Dr said his nap should be at least an hour and try to consolidate his cat naps but they’re all over the place. He sleeps well at night, 930-10 bedtime and wakes around 930-945 with 3 feedings in that time. Any advice on naps for babies at this age ? How many should they take a day? And when do they get more of a consistent/predictable nap regimen?