Dear friend,
We don’t “take” Holy Communion. It is given. We receive it. Before receiving Holy Communion you do some instruction in what it means to be a Catholic and on what the Church teaches regarding the Eucharist and the sacrament of Penance or Confession as it is more commonly known.
The RCIA is for non-Catholics who want to join the Church. But you are already a Catholic. So you need to talk to a priest about receiving some instruction regarding the faith. You are in my prayers.
Fr. Vincent Serpa, O.P.