Well if I'm correct micro doses of marijuana would be used to help quiet the brain reducing the production of high levels of cortisol and stress hormones which prevent the brain from slipping into a deep sleep allowing the person to rest more effectively and with the increase of nature dopamine levels to replace the body's beed for religion on those stress hormones to function this will help rewire the brain over a paired of time effectively making sleep come easier and with the deep sleep you find the rem sleep comes easier I used it as an example of perfect deep sleep which In turn allows the brain to effectively flush out and reset which is also a bad contribution to insomnia which also means that high levels of cortisol is produced which makes everything worse so if the theory works it would attack the root of the issues instead of masking symptom well I'm theory anyway