First, from a sola scriptura perspective, it is still possible to draw the conclusion that infants were baptized in at least three instances of household baptisms. Second, merely saying that it isn't explicitly mentioned doesn't mean much because the absence of evidence isn't the evidence of absence. Particularly in light of the following.
"Baptize first the children, and if they can speak for themselves let them do so. Otherwise, let their parents or other relatives speak for them" (The Apostolic Tradition 21:16 [A.D. 215]).
In the Church, baptism is given for the remission of sins, and, according to the usage of the Church, baptism is given even to infants. If there were nothing in infants which required the remission of sins and nothing in them pertinent to forgiveness, the grace of baptism would seem superfluous" (Homilies on Leviticus 8:3 [A.D. 248])
"The Church received from the apostles the tradition of giving baptism even to infants. The apostles, to whom were committed the secrets of the divine sacraments, knew there are in everyone innate strains of [original] sin, which must be washed away through water and the Spirit" (Commentaries on Romans 5:9 [A.D. 248]).
The Didache even allows for sprinkling as a valid means of Baptism.
"Chapter 7 of the Didache addresses the topic of Christian baptism.
In verse 1 of this chapter, we see a connection between baptism and catechesis. Those who were about to receive baptism were first of all instructed in the way of life.
Secondly, we learn that whenever baptism was administered, God was invoked by his triune name: Father, Son and Holy Spirit. The recipient of baptism was being baptized into union and fellowship with the Triune God.
Thirdly, baptism ordinarily would have taken place outdoors in living water, meaning running or flowing water. This was the ordinary setting for Christian baptism, but verse 2 tells us that if such water was unavailable, Christians were free to baptize with other water, preferably cold water.
Next, we see that pouring water on the head three times which is known as triune baptism was an acceptable mode of baptism, even though it may not have been the ordinary mode of baptism.
Finally, we see that the rite of baptism was preceded by a short period of fasting. Those who were about to be baptized should fast, and the one who was going to administer baptism should likewise fast, as well as any others in the congregation who were able to do so. This fast ordinarily lasted one to two days.
The Didache does not explain the reason for the pre-baptismal fast, but it was most likely understood as a sign of repentance."
My journey in Christianity has been different from many, I was not raised in a Christian home and had zero exposure to the faith growing up. We didn't even have a Bible in the home. When I (in Baptist parlance) got saved in my teens after reading Romans, I had to first go back and read a gospel to figure out what this Jesus fellow was all about, and then open an encyclopedia to try and figure out what sort of church I should go to. At first I thought I should be methodist, but I quickly realized that the Church of Wesley was DOA in the real world. So I parked myself in the SBC for decades until it too abandoned its roots and began to drift away. Which led me to my deep dive into church history and Orthodoxy. But that is how I went from a belief in restricting baptism to an arbitrary age of accountability to a belief in infant baptism.