My 18 month old only usually has his dummy at night and nap time but lately he had a bout of illnesses from a cold, then soon after he had hand, foot and mouth disease and then a few days later he got a tummy bug and he got quite clingy t his dummy and blanket. He's better now but teething. I let him have his blanket sometimes if he needs comfort as can't see the harm but don't want him having his mouth plugged all day or even have the day. But he screams "dummy!! Dummy!! Dummy!!!" And throws himself around tantruming. DH sometimes gives in which doesn't help saying "oh but he's in pain with his teeth".
Anyway I'd like to perhaps get rid of the dummy but don't know if he's too young for that and I don't want to traumatise the poor lad