Adding to my post from earlier:

I took Liam out today in a sling. Just up to the shops to run a few errands, but I was a bit worried about it, since he's been unsettled lately. And he snuggled into the sling and went to sleep after about 30 seconds. Awww

I'm really happy, since it's the first time he's really settled in the sling enough to sleep for a while - usually he'll be happy for a few minutes and then start grizzling. I've been popping him into a sling or wrap every day to get him used to it, and it's working.

And now he's asleep in his bassinet again