I think that's 2 of the worst things you can as your making a rod for your own back.
If they are just fussing quietly, leave them, they learn to nod off on their own then. if you go running in they are going to expect it every single time. As for dummies, or blankets, big no here. Trying to get them to leave them when they get older is a nightmare. I know of only one person that managed it without too much fuss, and that kid was 3 and she had to give her dummy up so Santa would visit. Every other parent I know has had a nightmare experience getting the weened off dummies.