A lot of us (me included) will say "I don't really remember much before the age of 4 or 5". Some say they don't have many memories before the age of 7 or 8. Then there are those who say they have memories of being n their cribs as infants. What do biology and social development tell us about our earliest memories?

https://www.sciencedirect.com/topics/neuroscience/childhood-amnesia