Forgot about first Confession. Maybe that’s because in those days your typical seven year old didn’t have a whole lot to confess.
“Uh, bless me Father, because I have sinned. I uh, uh what did I do that was wrong? Oh - I made a face at Shirley on the playground and she ran away.”
“Three Our Fathers & three Hail Mary’s, young man, & now make a good Act of Contrition.”
Yet if my memory is correct, does not the Church require that, based on what Paul said to “examine oneself”. I know with kids getting ready to make First Communion, they may not understand, but it is more or less a teaching moment.
Also in the years following VC II, the sacrament of cofession was often delayed until either 3rd or 4th grade. I think Blessed John Paul II put back the requirement that it be done in the 2nd grade.