I relate to this a ton.
For the most part, I don't know what I don't know until someone calls my attention to it.
But, my mom has shared so many things with me that I have zero recollection of -- things I should absolutely remember... and so now my attention HAS been called to the gaps, and it's so frustrating and, honestly, anxiety-producing that I cannot remember...that I can't force my brain to remember.

I go back and forth with waves of trying so hard to remember -- even reconnecting with people from my way-back past who aren't really people to keep around...and wanting to drive back to my old neighborhood where I grew up. (that one I haven't done yet, but still want to...)

then I'll go on a wave of letting it go. 'cus you can only push your brain to exhaustion for so long.