Help!!! Dentist

My 11 yo step son has to go to the dentist today and get several cavities filled. He had roughly 8 or more 😬

His mom took him a few years ago & he had a panic attack at the cleaning so they never fixed any.

We took him & did the whole cleaning thing he did fine- so today is the big filling day/ they probably won’t do them all at one time.

But I need help y’all- what are some natural calming mechanisms or any advice y’all have??

My dentist is great & I know he will be fine but it’s still a scary thing!!

I low key wish they’d be able to give him something for anxiety but he’s so young still