A source shared with ET at the time that Carter was "extremely disappointed that he had to leave the facility."
"He was doing very well," the source shared. "He gained a significant amount of weight and was getting stronger by the day."
According to the source, Carter has told those in his inner circle that he will "continue working on his wellness, and after he handles these personal matters he will be figuring out exactly what that looks like."
See more on Carter in the video below.