well the key for MASS is GRAVITY thus when you sleep less and are STANDING you experience more gravity or are spending more time in a GRAVITY STRESSED environment. when sleeping your shut down and wasting away
you always surprise me with more and stupider statements everytime you post.
Why do you always question yourself about the way you lift, eat, sleep? It'S borderline obsession.
I lift since 10 years, am a shorter version of you with very similar build ,muscle shape and mass yet i dont feel like i need to question the way i train that much anymore (ironically i made most gains that way), the only thing you need to know even after years of training is that you have to keep consistant to make progresses, considering you cannot change the way your body put on muscles anyways with a different nutrition o exercises: it's all about genetics and being content with what you obtain being consistant.
Be consistant sticking to the basics and if you cannot be satisfied with your results it means you have some other mental issue or something. What is the point of being constantly unsatisfied with your physique?