All of the notes above Fret 12 on any string are just repetitions of the same notes, an octave above (for example, Fret 14 on the 6th string is an F#, an octave above the same note on Fret 2 on the same string). Therefore, we can simply subtract 12 from the fret number and proceed repeating the same process we have discussed until now.
Many artists brag about getting very little sleep because they’re so committed to winning. And that’s great. Good for them. And, yeah, you may have to go through seasons where you’re not getting a ton of sleep. Maybe you’re working on a project that you’re super passionate about and it’s taking some time. That’s fine, but give yourself a break every now and then.