This is a false argument from silence.
There are no infants being baptized in the New Testament.
I hear the crying of your imaginary infants going under, but they are imaginary infants that the Scriptures never confirms nor identifies.
As to it being the practice from the beginning of the Catholic Church, this should be easy to prove.
Provide all the evidence you have that infants were baptized by Apostles, or that Apostles taught this - BEFORE 100 AD.
It isn't there.
What is true is that much later in history, paganism was combined with Christianity to form the Catholic church.
Can you cite any requirement that only adults can be baptized?
Ah, yes. We've reached the imaginary point of argument.
Can you cite any requirement that only _______ can be_________?
This is progress because it is a tacit admission that you have no actual facts, evidence or logic to support this truth claim.
NOTE: you have failed via Scripture to support your truth claim, despite being asked more than once.
Now, on to "grace being imparted by sacraments"....
Chapter and verse please.
May you seek the Truth, and not your version.
Peace be with you.