if you are 57yo you better consider treatment seriously and do all tests, cirrhosis and liver cancer jump to very high percentage after 50yo
thanks for concerning,,,,really great help
These tests are not enough to tell about your condition. You should do ultrasound, fibroscan, hbsag quant hbv dna.
But anyway generally air-travel is not a problem.
Food mostly vegetables and fish. Keep BMI around 21-22.