Sorry, but I still have actual memories of my birth. I was there, I remember it quite well, as well as several months after birth that I mentioned later (maybe age 10) that were confirmed, that hadn't been talked about before.i told my parents things I couldn't have known. Things no one could have even known in order to talk about with me.
So appantly it is possible.
I don't care if anyone really believes me or not. My parents do. It is impossible for me to have known the things I told them.