Garth'zel stretches out with the Force to keep track of where things were so he wouldn't find out the hard way where something was to aid in following Ren.

Once at the room, he paces inside and chooses a spot in the middle of the floor to sink down to sit cross-legged on and closes his eyes. "Come back in a few hours. I should be more useful by then."

Time for him to regain his sight and clear up all the other issues hibernation sickness is giving him.