My five-month-old has a dummy to fall asleep with. She was a very sucky baby and before we realised we had a dummy habit. She's still sleeping in our room but at night if she wakes without it, we have to pop it back in. She's going to nursery in March and I wonder whether I should try to break the habit before then, or to let her continue with it. If I do, is she still going to have it when she's at school. Any advice?