The thing about having a 16-month-old who nurses is that, well, he's 16 months old. And he nurses. OK, that seems like an obvious point, but consider this: he's extremely mobile, he communicates readily, and he nurses.
He is not above walking up to d.w., pointing vigorously at her chest, and declaring, "That!"
Thanks to d.w.'s steady prodding he's now fairly adept at giving the sign for "milk", but he's taken that to mean extending his arm toward her chest, pantomiming milking a cow, and loudly saying "That!".
I'm not sure that's all that much better, actually. But at least he's learning.