M.M.
Losing that last nightime feeding was the hardest for my son too. It took almost a month. I cut it down by time -- so if you're at 30 minutes, go to 20, then 10, then 5, then 2, then 1, then literally 30 seconds (I let him nurse at each length of time for a few days before halving again). He would squirm and try to fight his way back on in the beginning but eventually adapted and then one day it was just over. Good luck!