Advice on how to sleep alone?

I am so scared to sleep alone, especially during highly stressful periods of time in my life. I always have had roommates, slept with my s/o (we don’t live together though so it’s not every night), or friends. I am unable to sleep alone, I have a body pillow currently, and funny shows in the background. I still am shaking with anxiety. My friends said I could call them just to have their company on the phone, but I want to remedy this so at least when I’m away from my s/o I can get some sleep.