Three months after his daughter Corinne Foxxrevealed that her dad had “experienced a medical complication,” a source tells PEOPLE that the actor “has been working really hard these last couple of months to get back to normal and has greatly improved since he first got to the facility.”

The source also reveals that Foxx, 55, recently had a party “to celebrate being better.” It was held at the Chicago rehabilitation facility he has been going to, says the source.

“He is still doing some outpatient rehab though,” they add.

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