The Rite of Christian Initiation of Adults is the rites and rituals by which a person is initiated into the life of the Church. If you want to be initiated into the life of the Church, ie convert to Catholicism, this is how it will be done. If it is not used, it is not real Catholicism.
Having said that, RCIA often refers to just one part of the process, the catechetical “classes” to teach the uncatechized. If you are already well catechized, which you probably are if you were confirmed as a Lutheran, you may not need much additional catechesis. Or you might. Priest and/or team leaders can make that decision.
It sounds like the time is not right for you. In or after College is a better time, and the process can be better shaped to your social growth and independence.