HELP! My son keeps shaking

Savana • 🦋ċĿọṡє ʏọȗŗ єʏєṡ, ọƿєṅ ʏọȗŗ ṃıṅԀ ॐ🦋

I took him to the doctors yesterday for this exact reason and they think possible night terrors but confused about shaking. This is his third time since August 10. He wakes in middle of the night, starts talking about random things then starts to shake. Shaking lasts 5 min or more. I finally caught some of the shaking on video and I’m going to send that to his doctor today. I’m hoping this is just night terrors but I’m not going to lie, I’m most definitely freaking out. I just want my baby to be okay 🙏🏼