From your symptoms, it sounds like lprd rather than a tumour.
If you have a picture of the laryngoscopy, please upload it.
Start the Pan D and Montek LC as advised before. Avoid spicy, oily and fried foods. Avoid excessive tea/ coffee. Avoid lying down or bending over immediately after a meal. Avoid large meals. Better to take smaller quantities more frequently.
Next Steps
If symptoms do not improve within a few days, consult in OPD.