It sounds to me that this memory-recall game likely started when you were a toddler or preschooler rather than an infant, and that while this may give you additional reach back into your earliest memories, it was likely more a game of creativity than genuine memory recall. Into adulthood the real memories and the invented ones can end up feeling roughly the same.
Unfortunately there's really no way to test the accuracy of your memory aside from comparing your memories to a previously unobserved but concrete record. For most of us, our childhood was documented by our parents, and the stories shared with us over the course of our lives, so there's no way to prove that even the accurate recollections weren't simply our memories of the stories rather than the events themselves.
Humans have poor memory anyway. We misremember things that happened recently, so it is probably unwise to trust your memory of things that distant as being accurate, especially when they reach back to an age where most established science suggests that you wouldn't have even possessed self-awareness.
I recall one time when I was around 2 years old and my parents took me to Pizza Hut. When asked about toppings and hearing that we could have three, I said I wanted extra extra extra cheese. They thought I was being cute. However, I had no concept of cuteness or how to be it. I simply wanted all 3 toppings to be extra cheese and to my disappointment, 2 of the toppings were not. At the time, I had not known how to say 3 toppings of extra cheese and I thought repeating extra three times would communicate what I wanted.
That said, I stopped playing my memory recall game around age 5 when I began to be bullied and did not want to remember the past anymore. That left me with far fewer memories from early grade school than I had from prior years. It also let many of my early memories fade, although not enough for me to forget them entirely.
My memory isn't as good as yours, but you just reminded me of this fairly distinct feeling. As a child you're being earnest; only as an adult do you see that as being cute.
I have quite a lot of early memories. More than usual. And I remember that I remembered more early stuff when I was a child but I have no recollection of my first year now and only really vague and maybe indirect memories of my second year.
Interestingly, my grandparents had witnessed all of this. Later, when I could speak and asked my mother why my aunt kept putting something on my head one day when I was younger, she recalled what my grandparents had told her and told me it was the nurse on the day I was born. I had not realized it had been the day I was born until she told me. At the time I could speak to ask about it, I simply had regarded it to be when I was very young.
* The time in the room where newborn children are placed. The events here were witnessed by my grandparents and told to my parents.
* The remnant of my umbilical cord falling off my belly button at my aunt’s house. That really hurt.
* My baptism. I had misunderstood the water as a prelude to being drowned and was terrified that the deacon wanted to kill me.
I assume that there are more memories from my first year, but since they do not correspond to something others witnessed and remember, there is no way of dating them to that year.
In the case of the first two, I had asked my parents about them when I could talk and they realized that I was recalling very early memories. In the case of my baptism, my mother had decided to recount my baptism talking about happy she was that I had been the only well behaved child there (the Catholic Church often baptizes children in batches). Upon hearing that, I remembered the event and responded complaining that I had only been quiet because I thought if I had opened my mouth to cry, I would have been drowned to death soon afterward. What was a fond memory for her was a horrific memory for me.
> I had misunderstood the water as a prelude to being drowned and was terrified that the deacon wanted to kill me.
Sounds like a rationalisation way later though? I don't think you could be aware of either concept at the time. Like, the fear of the priest as a stranger, or fear of the other babies screams from pouring water on their heads. Not the concept of drowning or killing.
Coincidentally, I have had a lifelong aversion to putting my head below water. It made learning to swim impossible.
One trigger was fear of sleep. How do I know I wake up the same person? Seems silly right? Well, past me without a whole lot of experience was really concerned. I can remember a ton after that time.
What I find really interesting is both of us made some active choice to remember. Like we ended up with self awareness really early.
For me, it was mostly about unanswered questions. I have memories that are strongest from that time:
One was flicking the spring in my crib. Swoosh doing, doing, da,da,doing! That is me earliest one.
Why does it bounce like that? And the noise! If I flick one today, on one of those
Another was a trip to the neighbors. Their kid was named Cash. That is what we call money! WTF is with that?
Cash took me to play down stairs and they had a ton of nice stuff down there. Fencing for a ring of thieves. I recalled enough to nail them many years later to which my mom confessed they moved to get away from those people. Lol.
Another was this big bee. I looked at it and bet I was faster and stomped! Ouweeeee! The need died, but also totally stung me. Was not faster. Ugh. Boy, I can recall our porch, welcome mat, bright clear summer day, that bee and my foot going down. . I have more. Turning on the TV was vivid. Old tube one made noises as it came up. And smells. I recall it like it was yesterday.
Anything intriguing and I go into record mode. Everything about that time gets saved. Where I was who I was with, happenings...
I was afraid I might forget and never learn the thing one learns on one of those.
I still do it. Not as often now due to experience, but if it is really new to me, I will feel that switch and off it goes.