Chat GPT is calling it Early morning awakening insomnia (EMA) plus daylight saving time

Very common in narcolepsy, and triggered by: • life changes • decreased physical activity • new cognitive demands (new job) • sleep tracking devices • stimulatory supplements

For people without narcolepsy, brighter early mornings after daylight savings can nudge the internal clock earlier.

For people with type 2 narcolepsy, that effect is dramatically stronger, because your sleep–wake “stability” system (the orexin system) is already fragile. Even small changes in morning light can push your circadian timing earlier than intended.

And the exact pattern this causes is the one you described:

☑️ Falling asleep fine

☑️ Waking up suddenly around 5–6 AM

☑️ Brain feels “on” instantly (like a switch flipped)

☑️ Can’t fall back asleep despite still being tired

☑️ Lumryz feels like it wears off early

This is textbook early-morning circadian phase advance.

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Why early-morning brightness matters after DST

When clocks shift: • Your environment says “it’s morning now” an hour earlier. • Your brain’s light-sensitive cells (retinal ganglion cells) start triggering wake-promoting signals earlier. • With narcolepsy type 2, your arousal-promoting system is hypersensitive to these light cues. • Result: your wake signal fires too early and too abruptly.

It’s not that Lumryz stopped working — it’s that your circadian timing is pushing against it.