You would need to contact the pastor at your local parish. As an Orthodox Christian you have already received the sacraments of initiation. You do not receive them again. You do not go through the rites of RCIA.
Since parishes do not routinely encounter Orthodox Christians who wish to become Catholic, there is a good chance they may steer you toward RCIA. That is not appropriate for you. If needed, call the chancery office and get assistance at the diocesan level.
See RCIA 474: In the case of Eastern Christians who enter into the fullness of Catholic communion, no liturgical rite is required, but simply a profession of Catholic faith, even if such persons are permitted, in virtue of recourse to the Apostolic See, to transfer to the Latin rite.
Orthodox Christians become Catholics in the Eastern Catholic church that corresponds to their Orthodox church. Someone goes from Greek Orthodox to Greek Catholic, Russian Orthodox to Russian Catholic, etc.
I believe you would have two options. One is that as an Eastern Catholic you can fully participate in the Latin church. If it’s easier to go to Mass in a Latin parish, you can do that, just as a Latin Catholic can go to a Russian Catholic parish if they like. The other option is to officially change to become a Latin Catholic. Your priest or the chancery office can help with that.