you don’t take RCIA, it is not a medication, you prepare for the Rites of Christian Initiation, minor rites, culminating in sacraments of initiation for those who choose to join the Catholic Church. These rites punctuate periods of study, prayer, scripture-based meditation and formation. Preparation is usually at least 2 years for the unbaptized, and begins with a period of inquiry, which is just that, asking questions, getting authoratative answers and discussion. Open to all, hopefully facilitated by an informed practising Catholic assisted by deacon or priest.
Then when one decides to proceed, you celebrate the Rite of Acceptance and enter the Catechumenate period. As with each of these periods, “it takes as long as it takes” there is no firm rule we are all starting at a different place and some have a longer journey than others. During this time you attend formal classes on Catholic doctrine and practice and your course materials are based on the Catechism of the Catholic Church. You also attend the first part of the Mass, the Liturgy of the Word, and are then dismissed for a study and reflection on the readings, which is a key part of the process.
During this period you are also brought into the life of the parish participating especially in its social justice ministries and community activities.
When the Catechumenate period has been completed you celebrate the Rite of Election at the beginning of Lent, where the bishop formally accepts you as one of the elect who will join the church at Easter. Lent is an intense period of study, prayer and preparation, punctuated by scrutinies and minor exorcisms, and a retreat. During the Easter Vigil the elect are baptized, confirmed and receive the Eucharist for the first time.
These Neophytes (Greek for newbies) participate in Mystagogy at least until Pentecost, preferably for a year after baptism, where they explore the Paschal mystery more deeply. Adult formation in the knowledge of the mysteries and doctrines, and pursuit of spiritual growth should be a lifelong process for all Cstholics.
The above describes the process for the unbaptized. Baptized adults participate in a similar period of preparation for acceptance into full communion with the Catholic church. Children go through the same process, adapted for their age.
Short answer: yes, find out about Inquiry Sessions and RCIA preparation at your parish.