Try getting some sunlight outside in the morning. Curfew your electronics two hours before bed. Keep the room pitch dark and quiet and I suggest a sleep mask and or ear plugs. Eat some carbs an hour before bed. Boil a banana with the peel for ten minutes and make this tea one hour before bed. (Cut the banana into three pieces first). With the peel on.
If you have to use a comp, wear special orange glasses to block suppression of melatonin. Use a flat pillow. Use memory foam mattress.