Firstly, each receives the Sacrament of Baptism. Secondly, the baptized Christian is strengthened by the gifts of the Holy Spirit in the Sacrament of Confirmation. Thirdly, the Sacrament of the Body and Blood of Jesus nourishes the Catholic Christian, now a confirmed witness. It is no secret that the liturgical purists insist that the three sacraments take place in the order described above. Indeed, in the Eastern Rites of the Catholic Church and in the Greek Orthodox Church, all three sacraments are conferred at one time.
Age is no factor.
One can more clearly understand this if the Rites of Christian Initiation involved adults only. The fact is that our common practice is the baptism of infants. Recognizing that, the liturgical law for the Roman Rite defers the celebration of the Sacrament of Confirmation, until at least the age of discretion more commonly referred to as the age of seven. Confusion ensues when the candidate for Confirmation has already received the Body and Blood of Jesus in Holy Communion. Note the disruption of the order of the sacraments of initiation, Baptism, Confirmation, Holy Communion.