This could be it... *update* This IS it!
It's been three days since DD had a bf - I'm tentatively thinking I could be looking at her fully weaning.
We went away on the weekend and I got up earlier than her. She was so excited about our trip that she didn't notice we didn't have our usual morning bf in bed. Then she spent the night having a 'sleep over' at a good friend's house with their LO and she certainly didn't miss me then (you should have seen the tears when we left later that day!!). This morning she slept in and I was already up. She wanted breakfast first, suggested she might have a bf afterwards, but wasn't interested in the end (I didn't offer, but she said she was full and didn't ask).
So that's been three days in a row. I don't think it'll take long for my supply to drop, given she's only been having very short bfs as it is. She may come back for a few more, but we'll see.
If this is it, she's bf for 3 years, 11 months and 2 days!