My bb doesn't use 奶咀 but my friend told me the way she helped her BB 介奶咀 is just one day she told her daughter her 奶咀 flew away and didn't give her the 奶咀 back since. Her daughter did cried and begged for the 奶咀 back for like a week or so but when time flies, she forgot about it already.
poor mommies and babies !! Thats why i chose not to give 奶咀 to my daughter in the first place. Also chewing on 奶咀 is not very hygienic. Just thinking......if your babies can't quit sucking on 奶咀 now, in the future it's gonna be the same too if you try to help her quit again. but I understand all mommies don't want to see their babies cry like hell begging for the 奶咀, I wish you all good luck in helping your babies quitting 奶咀 !! ganbade ne !! dont' give up !