When did everyone introduce comforter? I'm trying to start some sort of semi-self settling with my 3.5month old...currently breast feeds to sleep mostly but will nod off with a dummy too sometimes so I'm encouraging this. I have bought a comforter to try and get him to 'attach too' for comfort but then thought about the risks of it being loose in crib etc and have changed my mind 😕 Too young yet anyway?? When to start? X