Yes Cedarwood oil does help you sleep.
Cedarwood oil has a way of naturally sedating you so that you fall asleep faster and stay asleep and wake up well rested the next day.
You can apply some Cedarwood oil under your nose after diluting it or put the Cedarwood oil into a hot or warm bath or breathe some Cedarwood oil in before going to sleep.
Another way to use Cedarwood oil for sleeping is to use an essential oil diffuser and let the Cedarwood essential oil diffuse into the air.
Then that can help you fall asleep fast and help you stay asleep.
If you suffer from insomnia and cannot get to sleep and have tried many other things including sleeping pills then trying some Cedarwood oil for sleep does work and is more natural than sleeping pills.