Re: bad BF habits - to break or not?
I don't think using a pacifier is going to cause any problems with your supply unless you are using it to replace feedings. I'm not saying run out and buy one if you don't have one already, but if you do use one it's not a supply concern unless baby seems to be not eating enough or develops nipple preference. In my experience they'll generally spit it out if they are hungry and want to nurse, though I usually offered to nurse before offering the pacifier.
“We are not put on earth for ourselves, but are placed here for each other. If you are there always for others, then in time of need, someone will be there for you.”