We recently night weaned at 31 months, and believe me I never thought we'd actually get there! DD is also very spirited/persistent/resistant to change, and was
very deeply attached to nursing, day and night. For the longest time I'd read everything and ask everyone for advice and find it impossible to imagine getting to 'the other side' of it.

But we did with only a couple of nights of minimal crying in parents' arms.
Like you circumstances finally necessitated it, so the first thing that I think was really key was my mind being firmly made up finally. I think it's important that they sense from mom a calm sense of determination - not that this is a big dramatic change, but rather that it's just the way things are going to be from now on. Easier said than done.
The second thing we found was that cold turkey was the only way for our particular child. Some kids can cut out a 'session' or two, my DD was never that kind of a nurser. It was like torture to her when we tried it, turned out to be much more gentle and easy for her to accept a clear-cut "no nursing between bedtime and wake up time" policy. (And we have continued to nurse to sleep and for nap in bed - it's not always the case that you have to break that association!)
We continued to co-sleep and I stayed there - we'd tried in the past doing the separate room thing and that never worked for us. She got so much more upset over the separation than the not nursing, kwim? Originally DH tried to do more of the night comforting, and sometimes she would accept him rocking, but we found that for us she really needed the reassurance of mommy still being there for/with her even though nursing wasn't an option.
Another thing that helped complete the night weaning was DH goes to her for any wakings in the early evening, before we've gone to bed. For some reason those were difficult nursings to give up, and if I went to her it'd turn into a whole melodrama. He'd always gone to her
some of the time, so I suppose that made it easier to accept. She now often wakes briefly once (we're in the thick of bad dreams/imagination taking off) but will go immediately back to sleep if he just rocks her for 30 seconds.
I definitely think talking about it all, even if he's not too verbal, helps. Reminding during the day (when he's not groggy and cranky) that the milk (or whatever word he uses) will be going to sleep at bedtime too, and won't be awake until wake up time (or sun up, or whatever cue)...and reassuring that he can still nurse all he wants during the day helps too, I think. For a little while there DD did increase her daytime nursing but after two months it's finally started to even back out. If you don't think empathy will motivate yet (i.e. mommy needs more sleep etc), then maybe explaining it more selfishly would (breasts need to rest at night to make more milk for you). I did both.
Hope some of this helps. Good luck to you, the promised land of STTN does really exist!
