Try to get some sunlight after your arrival. Go for a walk near the hotel and force yourself to stay awake until a normal bedtime. Then try to sleep as best you can and get up at a normal morning time. Fight any urge to go to bed immediately on arrival.

I agree with avoiding excessive alcohol during the flight and making every effort to stay hydrated by drinking lots of water or juice. If you have a choice of air carriers and routes, look for a flight on the 787, which maintains a higher air pressure in the cabin, closer to normal. That can help.