Sleeping thru the night?

Malarie • 26 years old, Married, Mother of a 7 yr old girl & newborn boy!
How long till you baby slept thru the night? My baby is 5 weeks old & wakes up about every 2hrs sometimes sooner to nurse. I'm wondering if I'll ever get a good night sleep. Is it possible for breastfed babies to sleep all night, I know breast milk digests quicker than formula.