E.H.
Hey L.,
I am a speech language pathologist. I may recommend you taking him to a speech path for an evaluation, especially if things seem to stay the same or get worse over the next few weeks. One recent study said that telling kids to talk quietly can make stuttering worse, so that is one thing to try not to do. Other general advice:
1. In stead of telling him to slow down, you need to model slow speech for him when you are just speaking. Don't tell him that you are doing it, just slow your speech to a calm rate and maintain that especially when he is stuttering and you are having a conversation.
2. Don't draw attention to the stuttering.
3. Maintain eye contact with him when he is speaking, especially when he is stuttering.
4. Don't finish his sentence for him, or the word for him. Let him work through the stutter while you remain patient and engaged with him.
5. If your son starts to seem frustrated by his own stuttering then may need to be more concerned.
There is a great booklet that you can get from The Stuttering Foundation. There number is 1-800-992-9392 or their website is www.stutteringhelp.org. The booklet is called "If your Child Stutters: a guide for parents" It is great and gives wonderful advice and insights.
Remember, he is young and this is likely a phase, but you can do things that will help or could hurt. Patience is a big key.
Hope that is helpful.
I am a mom of two boys ages 4 and 1. I have been a speech pathologist for 7 years.