Rush Job?

I read somewhere that Deborah Kerr and the producers of this movie were aware that Cooper was very ill and he had confided to Kerr that he was often in a lot of pain. So they had to hurry with the filming. The article or articles also said that the post-production was put together quickly so that it could be released before Cooper died. Wish I could remember the articles. They were in newspapers or magazines back in the 1960's or 70's. I am certain that at least one article related to first-person conversations between the dying Cooper and author A. E. Hotchner, as reported by Hotchner. Maybe these problems were responsible for the poor results of the movie as released.