🚀 go-pugleaf

I have had many cats in my lifetime, but never one with the habit my 4-month 
old kitten now has. I adopted a kitten at about 8-10 weeks that was born in the
wild and whose mother managed to raise along with 4 other litter mates (3 of
which I also found homes for) by catching and eating "junk food." My kitten
is now completely domesticated and very affectionate, with the one bad habit 
that he enjoys suckling the clothing of whomeveis holding him at the moment.
It is quite cute at this age, but I don't want a 14 pound adult cat doing it
in a year from now, so we've (unsuccessfully) tried to discourage him. Unfortunately,
whenever he is contented and we start to pet him, he begins to suck our clothing, purr,
and knead with his paws (which is not unexpected or unusual). Has anyone
had any luck with breaking this habit?