2 month old sleep schedule w. breastmilk

How long is your EBF 2 month old baby sleeping in the night time ?? 
My baby still wakes up every 2-3 hours to feed and her naps are so short during the day it's almost as if she doesn't wan to sleep. She was also born 3 weeks early so I don't know if that will play into how her sleeping will regulate? 
Any help is appreciated thank you xoxo