I usually do formula when I’m in public and not at home but I’m trying to aim for breast milk during the day and formula over night. So when I’m in public how long can breastmilk last in the diaper bag? I really don’t wanna do anything wrong and waste the milk. I have some in the fridge right now and we will be away from home tomorrow morning so once out the fridge how long can they last in the diaper bag? Also. Do I give my baby vitamin D drops even thou he’s not fully on breastmilk , he’s on both formula and breastmilk