Is there a way to stop jet lag?

Various factors: It depends on your direction of flight, and how many time zones you will cross. If only 1-2 time zones, you will probably be okay, but if 3 or more going east, you will need equilibration. You can help yourself by drinking water, moving around on the plane, staying away from alcohol & caffeine, and adapt to new time zone by being in sunshine. Can use melatonin .3 to 3 mg when you want to sleep.

Jet lag: Hydrate really well wi water, before, during & after travel. Stretch during flight – whether you walk about or do it in seat. Start shifting meal & sleep time before your departure. Keep meals light & avoid alcohol. Consider low dose melatonin. Exposure yourself to sun on arrival. Try add like TimeShifter app, Check: https://www.cntraveler.com/story/jet-lag-remedies-that-actually-work