My Final answer: Yes, you can regain consciousness, but not the same consciousness.
See, If You Dream Too Deeply, Can You Regain Consciousness?, UC#3197All that remains is your final question, an open-ended question: Do you really want to?...
...dream too deeply and risk having a change in consciousness.
No one can properly answer this question with weighing, the effects and results of each answer as it relates to being able to achieve dreams versus too deep dreams.