I'm sorry to hear that. The doctor may not recommend surgery at this point but observation of this condition is necessary. He needs to eat simple light homecooked foods with thin gravy, low spices and oils. Till you don't seek some medical treatment he will only feel worse. If the doctor recommends surgery in the future he will need it as there are risks from having stones in the gallbladder to your other organs as well. Kindly consult a general surgeon or atleast a gastroenterologist.
For further consultation, you can choose from our list of best Gastroenterologists in Karachi and seek in-person advice.