I didn’t read the article but I have a simple trick that cure mine instantaneously.
I read once an article on Temple Grondin, an autistic animal-behavior specialist who concocted a restraining-apparel, the Squeeze Machine to secure animals for treatment.
I decided to make one for me to cure my insomnia. I bought a long cushion that I used with many small ones to make a box which I hug compressing me in the process. And lo and behold, it works the first time I ever tried it, and still now after four or five years.
Try it! It doesn’t cost much, and maybe it will work for you too.
Here’s one made for autistic patients:

I am a 74-year-old generalist, with two general BA and one unspecialized MA in ZooAnthropoSociology all undertaken to find out what’s wrong with humanity.