Gerd/LPR issue? Adhd by psychiatrist.

I has gerd from last 5 years. I am on ppi treatment from past 3 months but I don't know how to heal it fully. My endoscopy and ultrasound reports came out normal and when I ask my GI doc he said it may or may not fully heal depending on my diet. I am currently following a strict diet from the time I started my treatment. When on ppi I am completely normal except soul burping, suffocating like something has choked my oesophagus with full burning in chest and throat region, few acid refluxes and pain (sometimes sharp and dull) in upper stomach area, sore throat and mouth, with a lot of mucus when I wake up in morning, dry mouth with almost little to no amount of saliva. Now, most of the symptoms are very rare except the last two ones. Recently I started having tingling on my foot, he prescribed blood test which came out, it show  b12 and folic acid deficiency. I also have suspect of having functional dyspepsia by GI doc. And ADHD by psychiatrist.