RCIA is not a commitment to join the Catholic Church. It is a place to learn and discern and grow in your faith so to be certain that if/when you finally do decide to be confirmed in the Church at Easter then it is the right decision for you.
I would encourage you to attend RCIA and immerse yourself in the Church for the next several months. It really gives you a chance to live your life as a Catholic (outside of the Sacraments) before making it official (with the Sacraments).
I am also a convert, andy, and had a great time throughout RCIA. I met a lot of great people, learned so much about the faith, and have never looked back. Joining the One, Holy, Catholic, and Apostolic Church is the best thing that ever happened to me. Praise God.
God’s grace be with you, andy.