First of all, I love the gorgeousness of your poem!
My mind, especially lately -- is it something in the Cosmos? -- has also had a literal hell of a time shutting down. It's weird, but what I accidentally discovered is that listening to podcasts after I turn out the lights and pull up my sheets/blanket helps me fall asleep. I actually conk out while whoever is attempting to enlighten me. Of course I relisten the next day while walking or driving...