I will look forward to hearing the advice you received! I have heard a wide range of philosophies on this one. I mean anywhere from 4 mo to 2 years. I believe the 4 mo belief is that there are changes in the sucking reflex? On the 2 year end, there may be some concern about delaying speech development?
As the mother of 5, I do know that waiting too long will be a big problem. My first finally gave her pacifiers up between the age of 4 and 5--but I have to admit that this was more of a parental problem. The pacifier became a crutch--hence, the name pacifier. It did it's job. However, my lack of consistency drug the process on. One big sabotage was that on at least two occasions after some good weaning, my daughter found a pacifier we misplaced around the house. She finally gave it all up when we found all of the pacifiers together, collected them and "gave them to the babies who needed them."
On another note, children 2 and 3 never had the chance to get hooked. My second took one pacifier for a short time and gave it up when it broke. She used it, but was never really fond of it like my first. My third, he is only 4 now but I really can't remember if he ever used it. I know we tried and he didn't really seem to like it.
I just know that the pacifier can help sooth, but I would just say to be careful how you are use it. I feel like I really have to use it for my youngest twins at this point. They have to have some comfort while I am busy trying to meet the needs of the other little ones. At the point you are at, it is not too late to think about that. AND, probably most important--I have found that with any change for children gradual transitions are best. When you deem appropriate, start giving it less and less until you stop. Have a plan though--that really helps me.
Best of luck in whatever you decide! My apologies for being so long winded...