my brother has a blockage in his esophagus which now makes him unable to swallow any thing?
definitely this case can not judged online without seeing a barium swallow xray testing to know the amount and cause of current blockage please do them and get back to me until then try easily swollen mashed foods and juices so you can help him regain strength and avoid other health complications he may need a minor surgery to widen the esophagus which is dilation (stretching) of the esophagus as the main treatment. this is mostly esophageal atresia or tracheoesophageal fistula may have developed esophageal narrowing (stricture) at the site of insertion of the tube.