Re-read my post (without getting insulting) but I talk about schedules before flying. Then;

"Generally, when traveling with children, it's best to forget the schedule and sleep and eat when you can."

Sorry you couldn't understand that. Hope the OP did!

Many parents try to keep children up before a flight in order for them to sleep and this often backfires. Overstimulated children often have trouble settling down. If there's a delay, things can really get ugly!

But once in transit, you have to go with the flow. Usually there's no choice anyway. Deal with jet lag and resetting schedules once on the ground.