Sebastian dealt relatively well with jetlag. Sorta. On the 12 hour flight hour he slept for... one. And another hour on the shorter hop to Beijing. Then he slept for 5 hours that night, up and ready to go at 04:30 local, and stayed up most of that day. When we did the math, he'd slept about 8 hours out of nearly 40!! At the end of that he crashed so hard I changed a diaper and he didn't wake up! And then he was good to go.