I understand. The current Church is capable of all sorts of things.
Homosexual marriage cannot rightly be compared, however, with any heterosexual marriage, by it’s very nature.
I’m looking at the big picture.
Imagine the faithful behaving in such a way that the Bishops actually see the Holy Spirit working in the children of the Church. Instead of acting like those who approached Moses, with burdens and groans, and hard hearts, pressing him to concede to compromises.
Canon law does not give step by step instructions for converting to Jesus. I’m not saying canon law is useless, or that the OP’s question is poor. But that the faithful do not need to feel without moral guidance because canon law has not formulated a manual guide for procedures.
The Church is slow with these things for various reasons. She seldom forges the way before cultural obstacles encumber situations and lives, and establish a stronghold. Compromises are made, and ground is lost. That’s the unfortunate reality of the Church in this dark world.
If individuals want to convert in heart to Jesus, sacrifices and suffering are inevitable. This is something that I seldom hear in our Church.
Clergy cannot always tell a Christian what should be sacrificed. Maybe some good pastors are out there, who know how to encourage the narrow path. Many steer clear of encouraging difficult choices, even when there is canon law to support. They figure the poor faithful Christian cannot bear it.
Our parishes could really use assistance programs to enroll in for going through difficult situations. Once again, that requires the laity to be much more active and inspired than we are.