This is correct. There was a fight between Nelle and Jack over whether to raise RR as a Catholic. Nelle won.
However, as soon as he went to Hollywood, RR stopped going to a Disciples of Christ church. It’s not clear what churches he attended-—if any-—as an actor. There appears to be a general falling away from about 1934-1960. There is no evidence that he and Jane Wyman went to church much, if at all, nor where.
By the early 1960s, Reagan had become friends with Donn Moomaw, a Presbyterian minister who became his “spiritual advisor.” From that point on, he tended to go to the Presbyterian church. His general theology was basic salvation by faith, confession of the Lord Jesus, etc. In Sacramanto, though, there is again little evidence of him attending church. He began to attend church in D.C., but then stopped out of concerns for safety and convenience of other parishoners. Reagan and Moomaw remained in close contact.
The best book on this is “God and Ronald Reagan” by Paul Kengor. I have included as much as I could in my “Reagan: The American President.”
What is important about RR is not his church affiliation or attendance, but his private papers and even National Security Council meetings where he repeatedly spoke of God, Armageddon, and the need to eliminate nukes.