Hi, my DS, 4 is sucking his thumb and at the same time scratching his nose. It's his comfort habbit when he is tired and I'm often not able to do anything about it because he falls asleep doing it as well. I had a chat trying to tell him why it's better not to do it but so far he is not stopping and occasionally doing it even when he is not tired. It's a habit he's formed since being a baby. he was promised his favourite magazine if he stops but it didn't work. I'd appreciate your advice, please.