[He's operating under the assumption that this is a Keith who doesn't know or care about him at all, with no choice but to follow him simply for convenience and lack of options. He has no idea what's happening for him internally, and so when he notices that Keith is a little closer than before, he simply puts it as Keith not being a complete asshole rather than any real, specific concern.]
[He leads them across the island, although his movements are slow, slower than he'd like. And despite his reassurances, after a few steps, he goes back to looking sleepy and just a bit out of it. Still, things look more and more familiar for him as they go, and at least he knows what direction to head in to get to the forest cabin.]