The responses on this thread are insane. I can't believe so many posters clearly don't understand what it's like to have a BF baby who still feeds at night. Yes, children in nursery are on solids or could have expressed milk, and any parent could conceivably go in and soothe them at night - but the one with boobs is going to do a much better and faster job of it, and everyone will get more sleep if they take on that role.
OP, I'm in a similar situation in that my 15mo still wakes 1-4 times a night, and I feed her back to sleep. I do all night wakes and have done since she was a few weeks old, when I stopped needing DH to pick her up for me (I had a section). She doesn't "need" the milk in the night, but it's the best tool in my kit at the moment (and obviously, a tool that DH doesn't have).
The difference is that I get a lie in any morning I want, weekend or not, because we've always done it that way and DH thinks it's only fair that he gets up at 5.30, or 7 or whenever DD wakes, as I've been up in the night and he hasn't. I normally take an extra 45mins - 2hrs, and then they bring me coffee in bed when it's my wake time. Some days if she hasn't been up much overnight I prefer to get up with them.
So no, YANBU. Your DH needs to step up, at the very least on the weekends but tbh, every other morning as well.