I struggled a lot with sleep, deep sleep especially hits me if i dont get enough. Next day i am losing 50% of my cognitive abilities.
What helps me most is reading. Spending 30-60 mins with a book i like helps me to sleep faster but also improves my deep sleep. May not fit “sleep hygiene rules” but i am also reading from my kindle.
Also supplements mentioned in this thread is explaining the growth of OTC drug market.