If the breasts continue to feel overly full, consult a Lactation Consultant. There are lots of choices available to women who want to combine working and breastfeeding. The best preparation for going back to work is to get a good milk supply established during the time you have at home. Nurse often and wait to add supplemental bottle feedings until the 3rd or 4th week of age. Decide if you want to give all breastmilk or a combination of some pumped breastmilk and some formula.
Some women are able to pump at work.
Some nurse when they are with the baby and send formula to the day care. Once the bottle is introduced, the baby should continue to get one bottle a day, though it could be as little as an ounce of pumped breastmilk or formula. The infant may prefer for someone other than the mother to give the bottle and may want to be held differently than for breastfeeding. About 2 weeks prior to returning to work, begin slowly modifying the baby's feeding pattern to more closely resemble what it will be after you go to work. For instance, if you plan to pump at work at noon, begin pumping at home at that time.