"time to prepare for First Confession and First Communion"
First Communion
Creative Commons Attribution Share AlikeFirst Communion - Credit: Brian Harrington Spier

Traditionally, children make their First Confession when they are seven or eight, a week before their First Communion.   They should attend Mass every Sunday after receiving First Communion.  If they do not or if they commit a mortal sin, they must go to Confession before receiving Holy Communion again.