Here is the uncomfortable arithmetic nobody wants. If Fajr is at 4:30 and you sleep at 1, you are asking your body to run on three and a half hours, then blaming your iman when it refuses.
The Fajr battle is lost at midnight, not at dawn. No alarm strategy survives a body in sleep debt. Willpower is a morning currency, and you are spending it all before you sleep.
Count backwards, not forwards
Stop deciding your bedtime by when you feel done with the day. Decide it by subtraction: find tomorrow's Fajr time and count seven hours back. That's lights-out. Fajr at 4:30 means in bed by 9:30, which sounds extreme only because we've normalized treating the night as bonus daytime.
The Prophet ﷺ disliked sleeping before Isha and talking after it. Read that as a design principle. The night has a shape: pray Isha, wind down, sleep. The formless late-night hours we defend so fiercely are exactly the hours the morning pays for.
The scroll is the modern whisper
The hadith of the three knots describes the whisper: the night is long, so sleep. The modern version doesn't tell you to sleep. It tells you to stay. One more video, one more scroll, the feed engineered to make 1 AM feel like ten minutes.
So don't fight it with discipline at midnight; you'll lose. Fight it at 9. Phone charging across the room, the same placement that wins the morning. Screens done an hour before lights-out. You're not giving up your evening. You're trading its worst hour for the best hour of the day.
Summer, and the compressed night
At some latitudes, summer breaks the math. Isha runs past 11, Fajr lands before 4, and seven hours doesn't exist between them. Do what the early Muslims did with the qaylulah, the short pre-noon rest. Take the deficit back in daylight instead of taking it from Fajr. Sleep after Isha as early as you can, rise for Fajr, and let a short midday rest carry the difference.
A body that's actually slept doesn't need to be dragged to the prayer. It walks. Give it the hours, and the mornings change on their own, in shā' Allāh.