Inception

Have you ever thought about the possibility/theory you relive your entire life in the last 6-12 minutes of brain activity? If this was true would you not be inevitably and infinitely trapped in your own reality. If you near the end of your life, while reliving it, would you not relive your life again as if it was the first time? And because it's the first time would you not enter another dream level where time in a dream in a dream is slower that time in a dream because time in a dream is slower than time in "reality"? So if this is our truth/true reality, wouldn't our lives be inception and we would just be another level of ourselves deeper in our own consciousness? But everything we perceive would be real to the individual because everything happened before in their life time. And because we can't distinguish the appearance of reality from reality, who is to say what is real and what is not? You may not even be who you actually are but another thing dreaming to be what you are presently...