I'm so sorry if this has already been discussed (I swear I searched).... but, do you HAVE to switch up to the next size pacifier? We are currently using the Avent free flow, but I guess the question applies for any brand. My daughter is 6 months (I can't believe it) and she won't take the 6-18mo size. Comparing the two it looks as though the 6-18mo is significantly larger than the 0-6mo, and she isn't down with it I guess. Is there any harm in still using the smaller pacifier? Will the "thinner/smaller" pacifier be less safe when she finally gets teeth in?
She is a horrendous sleeper and is awful at self soothing, so having a useful pacifier is pretty crucial.