Kaz. when I went West, SF, Boston, San Jose and Mexico city, I was usually landing in their afternoons - my night-time. I just had to soak it up.
Coming back I was arriving at our 6AM so I just did the day and went to bed early. Slept like a log and was fine. That was me.
My BiL doing the same trips just could not cope. He was all over the place for a few days. We are all different.
Coming back from Brisbane I just forced myself to sleep. Woke up in Doha and was fine.