The following is an excerpt from this Bishop's Policy:
Precisely because baptism gives expression to the whole of the Christian vocation and precisely because it concerns a covenant which is lived out over the course of one’s life, there are numerous opportunities to renew this covenant. Traditionally, the Church has understood Confirmation as one such opportunity. But there are other opportunities, among them, the renewal of the baptismal covenant at every celebration of baptism, the renewal of baptismal promises at the Easter Vigil, and the rites of reception and Re-affirmation. Each of these rites, in its own way, is a renewal of the essential commitment made by the believer at baptism. At the same time, these rites give expression to different moments in the faith journey of the believer and the community.
The Diocesan Policy 1.1.3 on Confirmation is available here.