M.M.
HOT HOT showers, and ice packs.
I never BF, but it took me 3 days to dry up with my kids.
The super hot showers trigger your let down reflex. If it's really bad, you can manually express a bit, but the shower will do it for you automatically.
I would take them every couple of hours if I could, or as frequently as I could get away with it. I felt so much better afterwards.
In the interim, fold a couple of wash clothes into 4s...wet and freeze them. Put them in a baggie so you don't soak your bra/shirt, but stick them in there and bind them up tight. (the wash cloths allow you to conform them to your breast, rather than a rigid ice pack.)