Tremors could be due to psychosomatic reasons. Feeling safe from detaching from the body helps temporarily reducing the tremors.

The technique to detach the self  from the body is by understanding and believing that I, the self, am a different entity from the body. I am a soul different from the body. I am a peaceful soul. I am separate from the body.

I use visualisation of the soul as a tiny point of light standing next to stars in the far away sky. I focus on being a tiny point of light. I am like a star in the sky. I stand far away from the body on the earth. 

When I succeed concentrating on the tiny point, I reach an awareness of being the point. At that moment, you will find the tremors reducing or stopping.  This takes place on its  own. Your focus is on being a point.