[Mary] is the safest, easiest, shortest and most perfect way of approaching Jesus and will surrender themselves to her, body and soul, without reserve in order to belong entirely to Jesus.

St. Louis de Montfort

Louis-Marie Grignion de Montfort (31 January 1673 – 28 April 1716) was a French Roman Catholic priest and Confessor. He was known in his time as a preacher and was made a missionary apostolic by Pope Clement XI.

As well as preaching, Montfort found time to write a number of books which went on to become classic Catholic titles and influenced several popes. Montfort is known for his particular devotion to the Blessed Virgin Mary and the practice of praying the Rosary.

Montfort is considered as one of the early writers in the field of Mariology. His most notable works regarding Marian devotions are contained in Secret of the Rosary and True Devotion to Mary.

The Roman Catholic Church, under the pontificate of Pope Pius XII, canonized Montfort on July 20, 1947. A "founders statue" created by Giacomo Parisini is located in an upper niche of the south nave of St. Peter's Basilica.

source: https://en.wikipedia.org/wiki/Louis_de_Montfort

In Montfort's approach to Marian consecration, Jesus and Mary are inseparable. He views "consecration to Jesus in Mary" as a special path to being conformed to, united and consecrated to Christ, given that

" ...of all creatures the one most conformed to Jesus Christ, it follows that among all devotions that which most consecrates and conforms a soul to our Lord is devotion to Mary, his Holy Mother, and that the more a soul is consecrated to her the more will it be consecrated to Jesus Christ."
 

"God the Father made an assemblage of all the waters, and He named it the sea (mare). He has made an assemblage of all His graces, and He has called it Mary (Maria)."

Montfort's process of Total Consecration has seven elements and effects: knowledge of one's unworthiness, sharing in Mary's faith, the gift of pure love, unlimited confidence in God and Mary, communication of the Spirit of Mary, transformation into the likeness of Jesus, and bringing more glory to Christ.  Montfort's practice of consecration to Mary has both internal and external components. The internal components focus on surrendering oneself as a slave to Mary and to Jesus through her, and performing all actions "with Mary, in Mary, through Mary and for Mary". The suggested exterior practices include enrolment in Marian societies, or joining Marian religious orders, making Marian privileges known and appreciated, and giving alms in honor of Mary.
source: https://en.wikipedia.org/wiki/Louis_de_Montfort