Recently, I unlocked a memory at the age of 2 months. It is difficult to believe except to me. After unlocking it, the memory felt like it was yesterday. And I have recalled this memory multiple times in my childhood phase. I guess I am now recalling my childhood in greater detail which is causing me to remember what memories I was recalling at the time.
So why can't we remember our baby memories? Because of shock. The present day gives us so much stress. So we focus on now. We focus on what helps us now. We recall memories that help us in the NOW. If you want to recall a memory from before, imagine a stress that likely would have also occurred from before. Like being hungry and being unable to communicate. And reaching for a bottle of milk. Being unable to walk or crawl. Lying on your back. For me, hunger does not evoke too much stress. Other things do like headaches.