2MO only naps 30mins every 3hr

#help Should my LO be napping longer? I rock and pat her to sleep. If she wakes up, I'll pop in a pacifier but she's playing with it & ended up giggling and shows no interest in sleeping. Yet, 15mins later she'll start yawning & whining but she still doesnt want to sleep. So I'll carry her around the house & entertaining her. Only after her next feed, then she goes down easier. Is anyone going through the same? How do you cope?