It is possible, I have gone back to my early childhood memories the same way that I've gone back to past life memories. But I'll warn you, there is a possibility also of merging imaginative thinking with the real deal. Or interpreting events that did not happen. These are false memories, and can happen to anyone under hypnosis.
The best way to approach this should you try and regress yourself is to be impartial to the memory, to try and observe it rather than interpret to the best of your ability. It's a lot easier said than done.
An example. One meditation session I had a memory of my mother holding me when I was about one year old, perhaps younger. She had been bathing me in the kitchen sink. I could see that we had blue carpet in the hallway that led to our kitchen. And I recall looking at how the light filtered through our front door, our front door looked pink. I wondered if it had once been painted that shade of salmon-y pink.
I asked my mom about this afterwards. She said she may have bathed me in the sink at some point because they were fixing up the bathroom. She said yes, we had blue carpet, but no pink door. My thinking is that the evening light filtering through the glass panes of the front door gave the paint a pink-y salmon glow.
Random, and not all that interesting, but it goes to show.
I also have amnesia following a moment when I collapsed some years ago. I had mild concussion and it took a couple of hours for my memory to return. Very scary. I've recalled snippets of what happened, confirmed by my partner who was there at the time -- but when I recall the snippets, I am 'out of body' so to speak. I'm not inside my body, but out of it. It's very strange. The way I recall the memory is very blurry, much like distant past life memory. My partner confirmed what I said happened, but it's hard to believe we saw the same things. How do I know I'm not imagining it?
