Technically you could but it depends on definitions of consciousness and ability to affect, disassemble, and replicate - never mind the ethics.

To be a smartass with multiple definitions of consciousness we have concrete theories already. Given that xenon gas is capable of anesthetizing even plants it appears that the process is electrochemical in known life and disruption leads to unconsciousness - pain can't go anywhere. That tells us basics but building from there is difficult.

You're talking about sleep, I'm talking about "the experience of qualia," or whatever you want to call it. Sure, you can have a scientific theory of anesthesia. "The experience of qualia," categorically cannot be studied because it inherently makes no predictions about the behavior of anything in the physical world. It isn't like the idea of free will, where something is being decided, it is just about how things are being passively observed.