yeast rash on face

Meghan
Hi Mommas,
  My 1 year old has had a yeast rash on his face for about 3 or so weeks now. Doctor said it was yeast. Gave us some of the oral thrush meds to apply to it but it didn't work. Any other remedies you mommas might have? It's under his nose and around his mouth. Most likely from the cold he had and his binky. We are quite ready to give up the binky but we only give it to him at night usually if he is fussy or during nap time. Thank you!