Any suggestions-Could use some advice

Hi everyone, My husband had cancer of the tongue 3 years ago. He is still suffering today from microscopic mouth burns from the extensive radiation that he received. He still can not eat foods that he loves. Has anyone else experienced this at all? Does anyone have any suggestions on what he can do to find some relief? He swishes with lanacane, bendryl, and mylanta often. I would love to find someone who has experienced a similar situation. He could really use some support.