Unfortunately I don't fully understand what you mean, but yes, I should try, but if you have trouble sleeping you can't change anything because it's happening in my head
Just let it happen. At first it's difficult but other time your body adapt. Trust me I did it myself, I used to sleep like 5am now, I sleep around 11-12pm. Try your best to eliminate all light sources, it have improved my sleep a lot. A general rule that: Don't eat anything/heavy food 2 hours before sleep. Don't use your device before 30 mins of sleep. Sleep early.