Talk to the liturgist and see if this is part of some published way to do the mass.
It isn’t.
See the document Redemptoris Sacramentum:
**2. The Eucharistic Prayer
[51.] Only those Eucharistic Prayers are to be used which are found in the Roman Missal or are legitimately approved by the Apostolic See, and according to the manner and the terms set forth by it. “It is not to be tolerated that some Priests take upon themselves the right to compose their own Eucharistic Prayers”[129] or to change the same texts approved by the Church, or to introduce others composed by private individuals.[130]
[52.] The proclamation of the Eucharistic Prayer, which by its very nature is the climax of the whole celebration, is proper to the Priest by virtue of his Ordination. It is therefore an abuse to proffer it in such a way that some parts of the Eucharistic Prayer are recited by a Deacon, a lay minister, or by an individual member of the faithful, or by all members of the faithful together. The Eucharistic Prayer, then, is to be recited by the Priest alone in full.[131]
[53.] While the Priest proclaims the Eucharistic Prayer “there should be no other prayers or singing, and the organ or other musical instruments should be silent”,[132] except for the people’s acclamations that have been duly approved, as described below.
[54.] The people, however, are always involved actively and never merely passively: for they “silently join themselves with the Priest in faith, as well as in their interventions during the course of the Eucharistic Prayer as prescribed, namely in the responses in the Preface dialogue, the Sanctus, the acclamation after the consecration and the “Amen” after the final doxology, and in other acclamations approved by the Conference of Bishops with the recognitio of the Holy See”.[133]
and this:
[59.] The reprobated practice by which Priests, Deacons or the faithful here and there alter or vary at will the texts of the Sacred Liturgy that they are charged to pronounce, must cease. For in doing thus, they render the celebration of the Sacred Liturgy unstable, and not infrequently distort the authentic meaning of the Liturgy.**
I’m sure the priest is well intentioned, but he is not to add anything outside the norms of the liturgical texts, no matter how “nice” it seems.
Perhaps he could put together a series of teaching homilies that could be focused on the Real Presence of the Blessed Sacrament at Mass and at Adoration.
