As his battle with Alzheimer's disease progresses, Glen Campbell has been moved into a facility to receive full-time care.

The move happened recently, three years after Campbell first revealed his diagnosis, according to People magazine.

"He was moved to an Alzheimer's facility last week," a family friend confirms to the magazine. "I'm not sure what the permanent plan is for him yet. We'll know more next week."

The 77-year-old country legend, whose hits include 'Gentle on My Mind,' 'Rhinestone Cowboy,' 'Country Boy (You Got Your Feet in LA)' and 'By the Time I Get to Phoenix,' among many others, revealed his diagnosis in 2011, announcing that he would embark on a Goodbye Tour while he was still capable of performing.

Campbell's daughter, Ashley, traveled and performed with him on that tour, and she expressed fears that his disease would progress faster after it wrapped.

“He functions the best on stage,” she explained in 2012. “I think it’s where he feels the most comfortable, because everything is the same for him on the stage. He knows where he is, where the band is, where the audience is and what he’s supposed to do.”

The Goodbye Tour is documented in a new film, 'Glen Campbell . . .I'll Be Me,' which is slated to debut at the Nashville Film Festival on Friday (April 18).