I have BF my DD through both family and friends criticism ("she will sleep through if you FF, mine did" or "why are you still BF that's disgusting" etc.), she is now 2.3 and I am trying to stop.
She only feeds once a day just before bedtime, we currently co-sleep as well so that's not been at all controversial 
I have reduced her time on the boob down to 15 seconds each side (I have been reducing by 5 seconds each week and I started at 2 mins per side when I decided to start the rundown) and then she didn't ask so I didn't offer and she slept without it, the next night she did ask and then again the third night she didn't then the 4th night she didn't either.
So we get to last night and I'm ashamed to admit she asked so I gave in as I was in such agony having not fed for 2 nights.
So I guess my question is; Does that now ruin it? Should I have held out and suffered? My DM (ever helpful) suggested I go to the doctors to get something to dry me up, I don't even know if something like that exists, and it's not like I have oversupply, I just don't want to be in pain for days as we go non booby!