Elisabeth is 33 months and still nursing strong (In all fairness, breastfeeding hormones may be leveling out my pregnancy hormones, who knows). I have been much more laid-back with her than I was with my son, and I don't have a plan to wean her right now, except that she needs to be out of my bed in the next 6 months. I am expecting my milk to dry up during the pregnancy so that would be the easiest way to wean :)
I wonder how much I am actually producing now, anyway. A lot of times when she nurses, she isn't really getting anything. But I'd say 2-3 times a day she does get a snack, if not a small meal.