DS is 2y4m and most of the time bf to sleep at night.
I've also got a 2wo. Last night as I was feeding DS to sleep DD started crying and DH brought her up for me to feed as well but I asked him just to look after her as I thought DS was almost ready to go to sleep.
Anyway that took a bit longer than I thought and I could hear DD getting more upset. So I asked DS if I could go and feed his sister and he shook his head (bear in mind he's only fed morning and night). I then said "Oh but Alice is hungry and needs me and I'll come back and feed you as soon as she's done". He popped off and lay down without a winge.
I can't believe how lovely he is! I went back up to feed him afterwards but he'd already gone to sleep, and DH had been up to say how proud he was and hold his hand.