The most impactful must be to have grounding bed sheets, no? 8 hours of grounding daily. I also turn off my Starlink wifi between 22-06 every day, as well putting iPhone on airplane mode. I turn off blue screens at 20:00 - that includes turning off all LED lights and only use old style light bulbs. Actually also got a Daylight DC-1 device for reading and planning in the evening...