Someday we may be able revive the brain itself by connecting it to a body, in which case you would experience falling asleep and waking back up.
That could, theoretically, be a way to appease those who suffer from species dysphoria. Not any time soon, though.
I'm not sure if there have been any studies on it yet - people are only just starting to recognize gender dysphoria as a legitimate condition. Species dysphoria probably sounds utterly insane.
I don't experience either gender or species dysphoria, but that seems like a way to "cure" species dysphoria, unlike gender dysphoria which is actually workable. I know a few therians and really feel for them, having such a condition and not being able to do much of anything doesn't sound like a fun existence.
I've been trying to find my way since childhood, but it's taking a while. Hopefully I figure it out eventually. Having DID as well certainly doesn't help.
It's not a fun existence in and of itself, but I still have my fun every now and then.
Feel free to contact me directly if you'd like to talk more.