Sound machines are great. My 9 yr old still uses the vtech lil critters sound machine/projector to fall asleep. Best $20 spent! A psychologist may be good too. Especially if you have a children's hospital nearby. My son sees a psychologist at our closest children's hospital. Takes the stress away because it's a place just for kids.

Will try it out. Thank you.

there is on youtube , guided meditation or relaxation music youtube to help you fall asleep
I wonder if these will help till he no longer needs them

Thank you so much!

…sorry, forgot to add- In the meantime I would stay with him because he's scared. During the day, talk to him about it. Ask him questions about the whispering, what was on the show that was scary & tell him he’ll be fine & you’ll get through it together!