There is zero evidence the apostles taught infant baptism.
The scriptures make it clear how baptism works: Repent, and be baptised.
"And Peter said to them, “Repent and be baptized every one of you in the name of Jesus Christ for the forgiveness of your sins, and you will receive the gift of the Holy Spirit."
"Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything I have commanded you. "
A baby can't repent, and you can't make a disciple of a baby nor teach a baby to obey Jesus' commandments. The idea of baptising babies is categorically absurd. What does it accomplish? It is not found in scripture at all, despite fantasies that a Bible verse where Jesus says "let the children come unto me" somehow means we should baptise infants.
More to the point, we do know why infant baptism got entrenched - Augustine came up with his doctrine of original sin, and he then taught that babies could be cleansed of original sin by baptism. (Rather oddly, Augustine taught that babies that aren't baptised have to go to purgatory, as if a newborn baby that dies has somehow done something wrong.)
The idea babies need a ritual baptism to cleanse them from sin is ridiculous. Babies are born without sin, because they can't make any decisions yet to do something right or wrong.