Looking for advice

Looking for advice My fiancé stutters and he’s been worried that it’s getting worse. He’s stuttered since he was little after an emotionally traumatic event and we are looking for therapy options that might help him over come this. He’s tried a lot of options and Is feeling really discouraged. I really want to help him. Any encouragement or advice for him or how I can better help or support him would be appreciated. Thank you in advance.