You may have hidden your problems with insomnia in the beginning.
Set your alarm an hour earlier than usual if you are dealing with insomnia. You might wake up groggy, but it will be a great help when you want to sleep that night.Getting up earlier means more hours in the day so you to be ready to go to sleep earlier.
You need to get enough sleep as many hours as it takes to be rested. Don’t try to make up for lost sleep on other nights. Sleep until you feel rested and do this on a regular basis. It does not possible to lose sleep extra hours on another day.