Congratulations on nursing your son for 1 year. A fellow (former) breastfeeding mama. I KNOW first hand how difficult and rewarding that relationship can be.
Since it has been 72 hours since his last nursing, then you may be *that* much closer to the end of the tunnel anyway but I just wanted to chime in and let you know that cold turkey isn't your only option. I extended breastfed my little "schmoo" (lol) for a little over 2 years. Though she did prefer to nurse versus eat solids, I know that a lot of it had more to do with comfort than satisfaction. That being said - in spite of what you've been told- mama milk still has plenty of good stuff that your son could benefit from. It just has to be boosted with other solids that can be fanned in by limiting how often you allow him to nurse. Gradual weaning is always easier emotionally and physically (esp. for you)---- but I digress....
Here are some tips on coping with the discomfort of being engorged:
Physical comfort during weaning
Do not bind your breasts to help your milk "dry up." This is an outdated practice that can cause plugged ducts, breast infection, or breast abscess.
If your breasts feel full and uncomfortable when you don't nurse at a specific time, then express just enough milk to relieve the fullness. You can do this by pumping for a couple of minutes or hand expressing. The less milk you remove, the quicker your body will realize it doesn't need to produce. Sometimes just taking a hot shower will do the job - anything that relieves the fullness is fine. If you are comfortable without expressing at all, that's okay too.
Do express or pump if you get uncomfortably full. It's not good for your body to not have any way of relieving the fullness. Pumping or hand expressing just enough milk to relieve discomfort will not prevent your milk supply from decreasing. What causes milk production to stay the same or increase is adequate milk removal. If only a small amount of milk is removed from the breast, then milk production will decrease. In addition, expressing a little milk will relieve your discomfort and make it less likely that you'll develop plugged ducts, a breast infection, or an abcess.
These things are commonly used to increase mom's comfort during the weaning process:
Ibuprofen or other pain relievers
Cabbage leaf compresses
These things are occasionally used to reduce milk supply during the weaning process:
Herbs and other natural treatments for reducing milk supply
Birth control pills, especially those containing estrogen
Sudafed (pseudoephedrine), a decongestant