I would night wean them (or at least get it down to just one nursing session at night). I know there are strategies to do this (I nightweaned all of my kids at that age, and I had to do it solo b/c of DH's work schedule, we were cosleeping. But I never had twins so I might try doing just one twin at a time).
---------- Post added at 10:18 AM ---------- Previous post was at 10:13 AM ----------
https://breastfeedingtwinsandtriplet...toddler-twins/
The list of replacement comforting to sleep options is basically what I did. Also, what happens if you talk to them about it during the day beforehand so they're prepared and know what to expect? That made a huge difference with my toddlers 18 mos+ for a lot of things. (I call it 'previewing' and basically I just explain what's coming later that day, what I will do, what they will do, etc... so they have time to adjust to the idea and don't feel surprised)