What is b12 level? If symptoms are severe you can go for b12 injections. And check thyroid profile. Consult a neurophysician

I understand your concern and anxiety... possible causes may be underlying anxiety disorder, thyroid disorders,sleep disorders,intentional tremors,certain medications ,cerebellar disorders etc...fallow relaxation techniques like yoga, meditation,avoid alcohol, smoking, coffee, tea...have good sleep and develop healthy food habits..consult nearest neurologist for clinical examination and evaluation they will do the needful.

start with fruits , milk and green leafy vegetables ..if it is due vit b12 deficiency it will take time .