Hi Rachelsg, your baby's sleep pattern seems pretty healthy and normal
A baby's sleep is always changing. My son used to cat nap a lot as well, every 3 hours he'd nap for 30 minutes - if we're lucky! Otherwise it'll be 15 minutes. But I let him set his own pace and slowly he started napping for longer and twice or 3 times daily. Now he's 18 months and takes one nap a day for 1-2 hours. Only just after 12 months he started sleeping through the night.
Go according to your baby's needs and cues. There's really no need to try to make them sleep if they dont't want to. My friend's baby loves sleeping and is always sleeping whereas mine was always so wakeful and prefers observing and playing. Even as adults there's some who love or need sleep more than others