It is not uncommon at all to see women in line for communion with a 3 month old infant. Usually, the infant is given the Mysteries first, then the mom.
"n these circumstances the Church began to feel uneasy about the communion of persons who might not be able to swallow the host. "
This was my first thought. How does one deal with an infant who 'spits up' the consecrated host. As for dipping fingers in the Sacred Blood and placing it in the mouth of an infant to suckle ... well, I believe that the introduction of microbiology probably nixed that practice.
It is not uncommon at all to see women in line for communion with a 3 month old infant.
So it is the mother who determines when an infant is old enough to commune?
And how does baptism also confer church membership in your church, as it does in ours?