Could you define grace? Also how many times is a catholic "born again " through the sacraments ...and do you have scripture on that ?
Grace is a wonderful gift of love given to us by Our Heavenly Father.
As far as being “born again” goes, for me it’s a personal thing. A feeling of joy & hope I that fills my heart each time I receive Jesus Christ in the Holy Eucharist or when I confess my sins in the wonderful Sacrament of Confession. I feel like a new person each and every time. God is so good!!!
As far as being born again in the Sacrament of Baptism that occurs once as has been explained many times. Read chapter 3 of the Gospel according to Saint John if you want to know more.
Peace be with you always!