The Roman Catholic Church will never, never, never change Her position on marriage, same-sex marriage, intercommunion, or the teachings on any other doctrine.
Christ protects His Church. Will there be schisms? Yes, and soon. In affect, many Catholics in America and Europe are already either schismatics or heretics. To apostasize is to affect your immortal soul. A Catholic who falls away is in mortal sin, period. Those people who have disobeyed the Church in serious matters and are receiving Communion are committing sacrilege.
We can pray. We can fast. And, we need to not be complacent about our own salvation. Pray the prayer of final perseverance I put on this blog earlier this week.
Be concerned about your own salvation as well as that of others.