Let me tell you this, i am currently 19 and i have a nephew who’s is 5 right now and he has been around me since he was brought home from the hospital. He has grown accustomed to my stuttering and doesn’t even know it and when I talk to him and i can’t say this word or sentence he will literally help me by say such word or sentence. And I love that guy. To wrap it up, let your husband know that there is no need to worry, they will grow accustomed to him and he will be fine.