The 18-year-old singer-and-actress - who is currently being treated for "emotional and physical issues" at an unnamed clinic in the US state of Illinois - is reportedly set to leave the facility at the beginning of February after successfully working on her issues.
A source told gossip blogger Zach Taylor: "Demi has been making big changes in her life, and is excited about what the future holds. She will be getting out very soon."
Demi entered rehab voluntarily at the beginning of November last year after an incident in which she punched a backing dancer, but the `Sonny with a Chance` star is said to be determined to undertake a solo tour this year.
A new song by the Disney actress called `Shut Up and Love Me` has also leaked online, leading fans to believe she is ready to step back into the spotlight.
Earlier this month, representatives for Demi reached a settlement with dancer Alex Welch, who allegedly received a black eye when the star attacked her on a plane after believing Alex had complained to management about her.