Oh, and Tilda, I meant to add earlier: I still feed Liam to sleep 95% of the time. The only thing I've changed is trying to pop him off when he switches to comfort sucking and put him down in his crib still somewhat awake.

Something else that I think helped is that my mother started trying to settle him for some naps while she's here watching him (so I can work) - she's really calm and patient and spent ages rocking him to sleep. Now he'll go to sleep for her within 5-10 minutes of rocking, though it sometimes takes longer when he gets overtired. I think this has been useful in letting him learn that he can go to sleep without the boob. Could you try something like this with someone else settling Matilda so she doesn't smell milk? I find that Liam will only rarely settle for me without being fed, mostly because I can smell milk, I think.

And suz - Great point about the daytime routine. Something that we didn't really work on much, I have to admit, because I was always so damn tired that I was just doing what I could to get through each hour. But it probably would have helped immensely.