Honestly its gonna take some suffering but you have to ween him off of it. Not completley just at night. Make sure you give him a nice warm bath and a full belly right before he goes to bed. When he awakes in the night, at first go in the room and comfort him but tell him you are not feeding him, its bed time. No matter how much he cries, dont feed him till morning. It might be a few sleepless nights but he should get in the habit fast. Eventually if this still dosent work you will have to ignore his cries. Its not wrong when she know he just wants his pacifier, he is not hungry or wet, he will stop and go back to sleep when he realizes he is not getting what he wants. Remember he dosent NEED It so you are not in the wrong by letting him cry a little.