To things already brought up, if they bring him up this late August/early September he should maintain rookie eligibility which would make him pick eligible next year assuming he ends up with a year total of service time by end of 2026. He needs a 40 man spot this winter so you aren't being inefficient there.
He threw very few fastballs (just 33%) today and none in the 6th inning. He is working in a sinker and seems to be getting much more comfortable with throwing his changeup. I wouldn't say he is ready, but you can see them working on a lot of dev with him right now, still over getting results.