The introductory sections for the Period of Purification and Enlightenment conclude:
139. This is a period of more intense spiritual preparation, consisting more in interior reflection than in catechetical instruction, and is intended to purify the minds and hearts of the elect as they search their own consciences and do penance. This period is intended as well to enlighten the minds and hearts of the elect with a deeper knowledge of Christ the Savior. The celebration of certain rites, particularly the scrutinies (see RCIA 141-146) and the presentations (see RCIA 147-149), brings about this process of purification and enlightenment and extends it over the course of the entire Lenten season.
140. Holy Saturday is the day of proximate preparation for the celebration of the sacraments of initiation and on that day the rites of preparation (see RCIA 185-192) may be celebrated.
The minds and hearts of the elect are the focus of ministry, and hopefully, the grace of God. By this time in the faith journey of the elect, the catechesis should be largely complete. The Church doesn’t provide for last-minute cramming.
Many catechumenate ministries provide for retreat time for the elect. This would seem to be in alignment with the overall purpose of the season.