However, the recommendation should still be that mothers exclusively breast-feed for the first 6 months. Call Ob and get prescription for antibiotics. If severe, might need to nurse from uninfected side. Frequent nursing from infected side, heat and analgesia are effective. Again the answer will vary.
Most pediatricians agree that milk taken by breast feeding mothers can be associated with colic.
Once breast-feeding is established, it is relatively easy to combine formula and breast feedings. While some mothers elect to pump at work, save and freeze their milk, and have the sitter give it the next day, most mothers end up combining feedings. Start substituting formula seven days a week at a particular feeding. For example, have the mother not nurse at all, and give a formula feeding for the 10 AM feed. Mother can either pump, or wean herself off that feeding.