both of these characters kinda feel like chatgpt instances told to act human
The opening conversation sounds like either that, or that it's from one of those language learning books where they have awkward conversations as examples to teach you certain words.
A: It's not too hot for you right now, is it?
B: It's a bit cloudy today, so it's fine
A: Did you manage to get any more sleep?
B: Yes I slept for another two hours. The warm milk really helped I think.
A: That's good to hear
B: Yeah
As yes perfectly normal conversation between two siblings/classmates/coworkers.
Maybe the point is that they're supposed to be awkward around each other since they're figuring out their feelings. But a good author should be able to convey that without making it boring to readers. And still that doesn't excuse the abomination that was that huge conversation about changing shifts at work.