on the contrary, we see dohu eating/snacking this chapter. ok it can mean nothing, but my personal theory is that dohu is kinda healing when he’s with jh, as in his appetite came back, he can finally sleep. And he’s also informed about that highschool guy. So i personally don’t think this story would go that way.
however it would be interesting if he would’ve cried, or being more expressive with his emotions
His whole health situation has to do with what happened between Juheon and him, so it's pretty normal for him to subconsciously feel better when Juheon is around. He did sleep deeply in the van with him close, and he was surprised of it as well.
But what I meant is, staying away from Juheon for the second time might go worse than the first time. They'll still work together, so there's no "out of sight, out of mind". Juheon needs a wake-up call at the moment, and sadly the fastest way to achieve that is scare the shit out of him.
Doesn't even have to be actually serious. Just enough for him to get his head out of the ground.

I feel like this shit will go on until the fifth meeting, Juheon will force himself to still refuse Dohu, Dohu will keep the promise and force himself to ignore him or whatever Juheon wanted idk, making himself even sicker than he already is, will end in the hospitsa for overwork and Juheon will start his redemption/chasing ark.
This is what I feel is gonna happen. Dohu is one foot away from collapsing, I think the guy hangs on out of sheer habit after years of living like this.