I had the same problem with my 5th child. A nurse had told me it was a good idea to feed only from the good breast until the other one had opened up. So for six months i feed her from one side and soley pumped at least 4to 6 times a day until it was in full mode. After six month she could breast feed fromboth sides. The only issue i had after that was getting her used to the other breast. That took about a week. Smile and i hope this was helpful for you.