Mishap
This little chap does not feed from the breast he just likes to stroke it (anyone's will do!) - my DD finishes up leaning over the cot for him to fondle her boobs.
I have sent her the link to the programme (for which lots of thanks) and I hope that she will take some of the advice there.
Basically there is an underlying emotional issue - conceiving him (and his sibling) was hard, the pregnancy was hard, the birth was hard. There will be no more children as it is too risky (and certainly not if the sleep problems mean she and her OH never finish up in bed together!). So he is the last child, much-wanted and achieved at enormous cost in so many ways. Leting go and being firm is hard, which is why I never press her on it and leave them to find their own way.
I hope that the link to the programme and the two gifts I have sent will give some advice and comfort and the knowledge that she is not alone.
Could you find something that would feel similar for him to stroke ...needs to be a suitable material that it is made of to resemble soft skin! I know this sounds a bit weird but if that has become his comforter then he clearly needs an equivalent!