My DD2 is 3, when she tiny we almost forced a dummy on her. Reason being that we had DS1 and DS2 who had dummies and gave them up easily, followed by DD1 and DS3 who didn't want a dummy and sucked their thumb (DD1 still does) and both need a brace as a result. Now DD2 is 3 and gets distraught at the idea of getting rid of the dummy. She only has it at bed time or when she is desperately tirred (eg. in the car) so she's not runing round the street with it in her mouth. AIBU to just leave her a bit longer before making a big scene over it.