Just need a mode.
Try to normalize your sleep ... Lie at the same time, and just wake up.
The first time will not be familiar, and will terribly want to sleep ...Until then, while you're getting used, use the chewing gum. But since a lot of chewing gum is harmful to the teeth.
It is better to use a match, or a toothpick ... This will deceive your brain and you will not want to sleep ...)