Suggestions to help nephew

Suggestions to help nephew My 7 year old nephew recently started stuttering. He is getting speech therapy through school and was working with a speech therapist virtually. The private therapist was too expensive and weren’t seeing results, so they stopped it. I used to stutter and other speech impediments but after many years of speech therapy mostly overcame it. I’m wanting to help my nephew. My plan was to start calling him on FaceTime once a week and just have him talk about his week, Minecraft, or his baseball card collection. Is this a good plan or is there something else I should research that would be more beneficial for him? TIA!