I actually would love to thread something like this out, if you're open to it! Sokka is going to understand why Sans is a little prickly about him asking questions because he would feel the same way if it were his own sister and/or friends affected, but he's trying to be pragmatic and get information as soon as possible, since they need to know what they're up against and plan accordingly. I like the idea of him feeling conflicted about trying to do what he thinks makes the most sense. On the bright side, he'll make sure Papyrus has whatever he needs and is monitored while Sans is sleeping...And there's also potential for him to balance out his questions with stories about his sister/friends and their travels, to try and be comforting