Dan- Funny isn't it, our sleep school said "If it sooths her to keeps using it, as she'll get rid of it when she's ready."
They told me not to get rid of it until she's ready as she's more then likely going to go for her thumb and that is always going to be there. Therefore much harder to get rid of

Annabelle, just last night woke me up with "Mummy, where's dummy, I want it." So I found it, within her blankets and she went straight back to sleep