I'm trying to word this properly as my early parenting-forum experiences were Babyworld / Netmums where "self-weaning" always happened between six weeks and six months, so forgive my phraseology if it's inappropriate.
DS is nearly 2.5 and in the last week he has started to well, clap my nork when it appears. He's been on the right one only for a year as that's the side he can see the T.V from
I haven't worried about that very much as he's eating a bit and drinking lots of cows milk too. It's "just" a comfort thing for him says the HV but if DS needs that, why the hell not?
But in the last few days as well as the round of applause he just insists that I don't cover it up at all even when he's not latched on so that he can babble, sing, prod at it and generally explore. He'll latch back off if he forgets to clap initially too.
You're going to tell me he showing all the signs of continuing until four aren't you?