Remus felt very weak, but he felt the need to squeeze back, to show Sirius that he was okay, even though he could tell he wasn't. It was a soft squeeze, nothing like he would have managed otherwise, but it was there, and he hoped it would reassure Sirius; Remus could tell, even through his haze, that something was wrong with Sirius, and he wanted to do what he could to make that right.
"Y'need...bandages..." He closed his eyes, sighing deeply; he suddenly realized how dehydrated he was. His mouth was parched. "Wa-water?"