Hello
welcome to health care magic, I share your concern.
Excessive burp might be related to Aerophagia (swallowing of air), Use of carbonated or caffeinated beverages, smoking,
indigestion,
Acid reflux or
acid peptic disease.
In my opinion you should try to find out such an offending factor and try to correct it. However I would advise you to take antiacidity medicines like
pantoprazole or ranitidine group of drugs with antacids for 3 to 5 days.
If it's doesn't help than you should
consult a gastroenterologist for physical examination and series of investigation like ultrasound abdomen, liver function test, thyroid function test, blood sugar and an endoscopy if need be.
Have lots of fresh fruits and vegetables
Avoid junk and spicy food or carbonated drinks.
exercise regularly and try to maintain ideal body weight if you are obese or overweight.
Hope I could answer your question.
wishing you good health.