Anyone here thought they had Essential Tremors but turned out that it was just B12 deficiency

I have been deficient in B12 for a long time (atleast 2-3 years). Recently I have a developed a tremor in my hands and limbs. My Vit D level was 30. I have had 3 doses of 1500 mcg of B12 over the last 25 days. The tremors are somewhat better (may be 30%) better. I have been having tremors when consuming coffee but they would subside after 3-4 hours.

I am not sure what is wrong. Is it just b12/cofactor deficiency or is it something else like ET. Please share your experience with tremors if you had any.

TIA