My youngest at the moment, Azri, 22 months (going to be 23rd in 12 days) decided to wean himself.
He's more into yogurt, or Dutch Lady UHT.. be it the natural, or come with chocolate / strawberry flavor.
It's kinda sad. But come to think of it, perhaps that's the best for both of us. Eh, three of us (plus the baby in womb) :P
Still hoping that I can do tandem nursing when #4 arrives. Wish us luck!