BREASTFEEDING OR FORMULA????

Damenia • TTC #1 ... Mom to 👼🏾 2013 & Twin 👼🏾👼🏾 2018

I’m considering breastfeeding my twins when they are born (Due May 2019) .... but my sister says it will be too much pumping? (She has 4 kids and never breastfed) ... what are your thoughts???