Hi Batteries. Welcome to the forum.

a) Most of us are still in denial. At least I am.
b) Why don't you take the Lithium all at once. I do that. At night.
I take 600 and is still ridiculous. Some take 2800mg.
Ask for extended release. The side effects are less.
c) The tremors get better with propanolol. Ask your doctor.
Also drinking a lot of water. Until you pee clear.
d) Get a 2nd opinion if you're prepared to receive a different diagnostic.
Not saying it will happen, but it happened to me. Kinda lose the faith.
Anything I can help you with, PM me.