Bizi,
Have you tried a late afternoon / early evening sauna, hot tub, or steam room? Hot bath with magnesium salts? -- magnesium has some calming properties.
Raising the body temp a few hours before bed can help I think.
OK. I am sure that you remember how this works better than I do but I am putting it out there.
I hear you about the struggle to sleep while maintaining work.
I also understand about your need to keep medicine at a minimum -- esp. the meds that cause undersirable side effects.
More hugs.
Mari