Line work with tremors?

Hi! I need help finding acessibility tools that will make it easier to work despite my tremors. I tend to work with Ohuhu markers, prismacolor, fine liners, etc. I got the Mossory Greta Lusky kit awhile ago. I love it but its helped me realize my tremors have gotten alot worse. Im very good with colors but line work is becoming incredibly hard with my tremors. Are there any tools specifically to make it easier? Like something I can add to my utensils to steady my hand?