I came into the Church having self-catechized. RCIA was good for my being introduced to parishioners and others coming into the Church around the same time, but for the most part I skipped over RCIA. I took my first class at the beginning of November 2015, and was confirmed prior to Easter in March of the next year.
Here’s what RCIA is for, in my opinion: For those who are not already committed to open themselves completely to profess what the Church commands us to believe, RCIA is a time to air doctrinal grievances before one’s full membership in the Church would discourage those sentiments. If you’re still not on board with papal infallibility, for example, wait it out. Be sure you know what you’re getting yourself into. RCIA is a time of questioning and investigation. But if God has given you the grace of love for his Church, then that’s that, as far as I’m concerned.
You come from an Anglican background, so tradition and liturgy is not a totally foreign concept to you. I came in from non-denominational, Baptist-derived evangelicalism. The holy Roman Church was an alien life-form to my entire previous experience with Christianity. But grace made me love it, and God sped me along to Rome, warts and all, and I haven’t looked back. I am truly at home.
Everybody’s different.