My oldest sucked her thumb. The second used the two middle fingers of her hand, the 3rd and 4th had "Plugs" #3 had trouble with the "pl" sound and so to her it was a "prug"
We limited her to only using it for naps and bed time. If she got upset, she would run to her room and sit on her bed and suck on the pacifier. We were able to break her from it when one time we were visiting Grandma and somehow we forgot to bring one. when we got home, DH kept the kids occupied in the car and I ran and collected every one we could find and put them in a high cabinet. We had a rough couple nights at Grandma's and a couple nights at home but that was the end of it.
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My newest Grandson, Caleb Austin, was born May 29th. I am now Grandma to 4 precious babies. I am so blessed!!!!