Is he signing something or maybe he’s just writing notes (on a blank piece of paper)? And, so what if he changed rooms? I think the point of the pictures is that the President is able to work. He’s fully dressed, and sitting at a table. He looks a little pale and tired. They just call him liar no matter what he says or does. Even when he’s in the hospital.
By the looks of the photo, there appears to be a red "signature" tab at the edge of the paper. I saw those a lot when signing papers for the purchase and sale of a house. So, I would say he's signing something.