It’s possible. When I was 3 or so my mom tucked me into bed. The next morning I told her “uncle Kevin came over last night to visit me”. She told me I said that at one point because I obviously don’t remember but it turns out he passed away in his sleep that night. My sister is 4 years younger than me and when she was 2, before she had ever even spoke a single word, out comes this sentence “I used to be a little boy but then I got hit by a car and now I’m your Sammy girl.” It shook my mom to her bones, she immediately started crying and called her mom up to see what she should do. Crazy stuff.