(He should be practicing his liiiines.....)
It might feel like an externally imposed obligation that he's eager to escape, but it wouldn't get done without the external obligation! That's the whole problem! (Why is he suddenly arguing the side "I should do chores", what's going on here.) The external force helps the right thing happen, because he's not good enough to make it happen on his own. Rosy seems to be, apparently, but he isn't. But making good things happen is what external force is for. Or like, the kind his parents exercise. Even if it chafes.
Possibly this is a bad idea to continue to argue with her about, though? She says she has a bunch of feelings on it, and also it is late.
The "floating household" idea sounds good, honestly, though I really don't want to take advantage of you by having such a concept -- though I would be happy to help out around your place if you needed it. (And I won't try to clean the whole place, or anything like that! That would take forever.) I... do guess I like the idea of you being not-a-guest in my house, though it may take some time for my mother to see you that way. (And possibly you'd have to come visit more often to make that happen, which has both good points and bad.)
We can talk more about the second half later, if you want, since you said you're going to bed? But I'm not sure what better system there could be that would actually work, for me. You seem to be able to do that sort of thing on your own, from what you're saying here. I haven't been.
Regardless: I wish you good night, and now I am off to practice my lines, for real.
Sleep well!
Okay. Now it is actually line practicing time. For realsies.