Hypnosis before bed

Can you do hypnosis before bed everynight?
Is it still effective, or do you think people just fall asleep?
Also how many times do you have to do a hypnosis file before it starts taking root. If you could give an average. 2 weeks? A month?
Is it still effective, or do you think people just fall asleep?
Also how many times do you have to do a hypnosis file before it starts taking root. If you could give an average. 2 weeks? A month?