Lucid Dreaming | How to be Self-aware and fall asleep at the same time?

I've often noticed that being safe aware while falling asleep usually keeps me awake waayy longer then usual. Any tips to fix this?
I'd take so melatonin but i don't want it to affect my chances with WILD a few hours later. Considering melatonin suppresses dreams, what if i don't havw a dream to go into?

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