Get at least 30-60 minutes of sunshine/natural light a day
Get 30 minutes of exercise daily (even if it’s just a walk)
Hydrate
What the meme is referring to is actually called Circadian rhythm, it’s the different stages of sleep that is referred to as the sleep cycle. In a nutshell, you usually go from lightest sleep, to deepest, then back again every ~90 minutes.
If you respect this cycle, you will be able to retrain your circadian rhythm fairly easily.
Your brain is flooded with the chemicals that make you feel “tired” during the deep part of sleep, so if you use a traditional alarm clock and get woken up at that time you’re going to feel like shit.
Either wake up “naturally” (no alarm), or you can use one of those sunrise alarm clocks that emulate the light from the rising sun in your room and allows your brain to “warm boot” vs a jarring “cold boot”.