K. -
I am so sorry you have to do this cold turkey - it is never fun.
#1 Don't pump - you'll just stimulate more.
#2 Most decongestants dry up milk very quickly - Psuedophederine (sudafed) is really fast!
#3 Ice for Discomfort - no shower spray on the breasts or stimulation of any kind.
#4 Recent studies show that binding the breast doesn't do much for reducing supply - it just makes the pain worse and can increase your risk of mastitis, just use a good supportive bra is enough.
#5 Cabbage enzymes reduce milk suply. ie. Cold cabbage leaves placed directly in your bra until they wilt, then replace them.
#6 Herbal SAGE also reduces milk supply. I have a tincture form you can buy if you want it.
Please call if you want/need more info. Good luck, and I hope everything works out OK!
J. @ Every Mother & Child ###-###-####