Breastfeeding and saving milk

Brittany • Mama of a beautiful baby girl and another lil babe on the way💕

For those who already breastfed... do you guys combine milk from separate storage bags into one bottle feed? As long as within expiration from the refrigerator/freezer?

Say my baby starts eating 3 ounces all the sudden but one bag has 1 oz in from day before and the other has 2 from current day. Could I combine them for one bottle?