It's been about a week that he hasn't been asking in the evening, so we're down to one early morning nursing session.
Tonight I even felt nostalgic about it.
I think ending the morning session should be relatively easy - it's a matter of me getting my lazy butt out of bed instead of bringing him into bed with us. Just a matter of finding the right time. I'm going to wait a while to let him adjust to the status quo first.