Nap schedule guidance?

B

My little girl is almost 3 months old and seems like she has some days she’s extra sleepy and takes 3-4 hour naps / other days she naps an hour off and on throughout the day / days like today she fights naps all together and is super fussy. Does anyone have any advice on how to kind of get a routine going? Or is she still too young for a nap schedule? New mommy here and I’m trying my best to learn😅