Baby Sleep Consultant

I'm looking for help with day time naps. My baby is just turning 3mth and I struggle to get her to nap well in the day. If I manage to put her down for naps it's only about 15-20min before she wakes up crying. Sometimes I wear her in the carrier then she will nap slightly longer. Night time sleep is generally ok from abt 7am-7pm with 3-4 wakings for milk. Although on fussy nights she seems to wake every hour between 3am-7am.