Thank you very much for the reply.
I just have a few more questions:
When do you recommend taking the melatonin? 10pm every night? Are these https://www.amazon.ca/Puritans-Pride-Strength-Capsules-Melatonin/dp/B00K8K937I/ref=sr_1_1?ie=UTF8&qid=1546919639&sr=8-1&keywords=rapid+release+melatonin good? And what should the dosage be?
If I can't go to sleep or if I felt I haven't gotten enough sleep, should I still get up at the set wake up time?
I'm almost 100% sure my DSPD was caused from too many late nights and irregular sleeping schedules.
I tried going to a sleep doctor, but all they did was diagnose me with sleep apnea. When I mentioned DSPD, they just brushed it off and told me to slowly wind my bedtime back without any tips. I've been referred to a second sleep doctor who will hopefully take my concerns seriously.
I use Melatonin. Two an hour or so before bedtime and another around 3am when I get up to pee.