This is my second week back to work. I have a 7 week old. I am using a pump at work but only have a few opportunities to pump at work that are 3-4 hours apart. I am gone from home for 10 hours and I nurse on demand when I am at home. During the day I am only pumping 10 ounces consistently. At home my baby is eating about 15oz. of stored milk in the same time frame. He has been doing this for the past week and is using up all the frozen milk I worked so hard to save while I was at home! I am worried about what I will do when the frozen milk runs out and I am only bringing home 10 oz. each day. What can I do to up my milk supply and avoid supplementing formula?