B12 is in non veg food , you have supplements for vit b, use those

You need vitamin B12 to form DNA, make healthy blood cells and keep nerves working properly. Vitamin B12 is found only in animal foods and fortified foods. People who avoid all animal products should look for meat alternatives, such as soy products fortified with vitamin B12. Ten to thirty percent of older people may not absorb vitamin B12 well. It is advised that adults over 50 years to consume foods fortified with vitamin B12 or a supplement containing vitamin B12. The best sources of Vitamin B12 include: eggs, milk, cheese, milk products, meat, fish, shellfish and poultry. Some soy and rice beverages as well as soy based meat substitutes are fortified with vitamin B12. The burning sensation felt is most likely due to the vitamin deficiency and you may require a multivitamin along with the diet changes to stabilize the vitamin b 12 levels. If the problem is persistent or worsens I'd advise you to meet a neurologist.