I just had another thought which might help to alleviate the symptoms. When my mothers were ready to wean their babies and stop nursing, I would quite often recommend Parsley tea (1 tsp of parsley to a cup of hot water) and Parsley poultices (simply bruise/crush fresh parsley and apply directly to the breast, then cover with a hot, wet towel). Parsley acts as a diuretic and helps dry up the excess milk. I'm not sure how severe the problem is you are dealing with, but this might help alleviate the symptoms for you.