Khloe has been caring for her estranged husband ever since he collapsed at a brothel in Nevada in October and Lamar, 36, recently moved into a rented home in the same gated community as Khloe, reported People magazine.
"He can move around alone, and he can communicate much better. In the beginning, he couldn't talk at all. He knows how much Khloe has been there for him, and he is so grateful," a source said.
"The therapy can be incredibly frustrating and he has hard moments, but Lamar is a former athlete. He's strong. And he really wants to get better.