-I wish there was an answer.-
From your tag line it looks like you and I know the answer. However, it doesn’t always seem to take. My uncle, a LCMS pastor did a stint as institutional pastor in the mountains of central Colorado over 50 years ago. My brother & I were visiting to hike some of the 14,000 ft.s. One of the things he was allowed to do was to hold Bible classes. The thing that impressed him the most was the high percentage of those claiming to be “reformed” and released being back in a short time.
I have noticed that as well.
I have heard that many profess interest or conversion to get out on good behavior.
When the motivation is gone, they are back to their old ways.