there are various determinants in quality of sleep. These range from organic diseases to psychological factors. In your case, I propose you start by using other non drug methods. You can read a book or newspaper then get into sleep, you can watch a film, and you try to liberate your self from the tension of your pathologies of fact that you are on drugs. Get to be and discuss with loved ones. Depression
too can affect quality of sleep.
It shall be interesting also to discuss other options with your caring physician or a neurologist/psychiatrist
for a proper evaluation and more specific therapeutic options.