Hi A.,
I just recently went through this and was in so much pain... so I know how NOT to do it! and learned the best way to achieve a painless transition for both mommy and baby.
Cut one feeding a day. Occupy them with a sippy cup, or a snack instead of the breast. Also, do not sit in the same "breastfeeding area" with them during this time.
You can even cut say the 11am feeding for three days in a row... then chose another feeding to cut.
Do this for another three days.
Eventually you will be down to one feeding. I made the feedings shorter and shorte by five minutes each day...
Here is the key... what I did was kept the morning and night feeding... I would feed in the morning and then not breastfeed again until the next night... so it was almost two days without the breast. This only took a couple of times.
The more time you take to slow down the whole process, the easier and healthier for you and your baby.
Just please dont go cold turkey!
If you have any questions, I consulted my local la leche group... LOVE THEM! I was so close to tears in pain from going cold turkey and she informed me how to do this slowly... so I tried it and it worked!
Good luck and congratulations... this is a big step!