K.F.
I had the same problem shortly after my daughter was born. I was given this recommendation by the hospital's lactation consultants:
nurse on 1 side only-- for 2-3 feedings if possible & then switch breasts. That way, you are signaling to your body that the opposite side you're nursing on does not need more milk & your body will start slowing it down. It takes a good week or two to regulate, but it worked for me-- if you google @ overproduction, you will find a lot of helpful articles that have this & other suggestions. Just be careful if you pump-- it will cause your body to maintain &/or make more to keep up with the demand. I had a lot of other moms tell me I was lucky to have too much, but I didn't feel so lucky you I was in constant pain & leaking everywhere. I had so much milk that my baby girl would start to choke during feedings! It can be very frustrating, but just try to take one day at a time & know you are doing what's best for your baby:0 Good Luck!