I fly globally every few months. Never had Jetlag, When you get on a plane set your watch to the time of your destination and behave like it. So I go to sleep on the plane (usually sometime early afternoon UK time) get up when you land and get to work. Don't go to sleep till bedtime (in the country where you are, not your home one) and your golden.
Having young children isnt much difference from sleeping in Eco longhall.