Since the child is not responding to your prompts or guidance, it is recommended that you meet a professional and discuss in detail about the onset, recent changes in environmental triggers, precipitation, causes etc of this issue. I specialize working with kids & teens and use plenty of modalities for kids to open up discuss their emotions, thoughts, feelings etc.
I have scheduled the group mindfulness workshop for kids in the age group 4 to 8 yrs on 16th& 17th OCT,2021. I would suggest you to make him join this workshop apart from taking individual therapy for the kid along few mindful Parenting sessions to change your approach as a parent to the sudden change in the behavior of the child. I conduct all these Therapies shared above. You may book an online or an offline appointment with me.
Ananya Vohra (Holistic Abode)
Next Steps
The child must undergo Play Therapy, Mindfulness Therapy, CBT etc