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Lindsay Lohan has completed the "Priority" phase of her stay at the Betty Ford Center in Rancho Mirage, which we're told is the first month -- now the 24-year-old actress has moved to a sober house near from the main treatment facility.

While at the sober house, Lindsay is receiving "residential day treatments," which we're told is pretty much a full-time job.

During this phase of treatment, Lindsay is able to do her own grocery shopping and enjoy local activities under supervision. A representative from the facility tells us "it's a buddy system and no patient is allowed to go out by themselves."

Family members are not allowed to join patients on their excursions. Family can visit only on Sundays from 1 - 5pm ... and the visits must take place at the main facility, not at the sober house.

During her appearance on The Today Show this morning, Dina Lohan described Lindsay's stay at Betty Ford as "life-changing," adding that Lilo is "happy, relaxed, she is just a different person."

Since this is Lindsay's fifth rehab stay in less than three years, let's hope her move to a sober house gives her enough supervision to keep her in check.