A lot of good advice already, but I'll give my 2 cents anyway :). It sounds like you are loving and supporting parents and thats the best you can do for him. If you never told him it's ok to stutter, tell him that now. I was never told that ever, and I felt broken. So hes not receptive to speech therapy right now... and thats ok. He's starting to take his own stuttering journey and as he should. Hes the one burdened with this. For some of us it becomes much less of a burden or maybe no burden at all. IMO, therapy is only going to be effective as he is comfortable with it. Any technique will not work if there is constant fear, shame, avoidance going on and at age 11 Im sure theres tons of it. He's entering his teenage years. He needs to learn how to advocate for himself, learn to accept his stuttering, and desensitize himself to fear of stuttering moments. If he gets to that point, therapy can be more effective. You can see if hes open to other forms of therapy. Maybe with a psychologist, to work on these soft skills. I wish i went to one years ago. Encourage your son that he will be able to do anything, stuttering or not. There are numerous doctors, engineers, lawyers, even actors here. He is not bound by his stutter. It will all work out. Believe me. The sooner he changes his mindset the easier it will become. My dad told me when i was young i needed to work harder than everyone else because of my stutter. That was real detrimental to me. It just gave me an inferiority complex and the anxiety piled on. We are all here for you and your son.