I won't speculate on the convict's motivations, nor his campaign's. Anyone who says they know what is going on is -most likely- just guessing.

The convict has a history of trying to steal the spotlight, and monopolize the media attention. I'll take your word that he has only had the one press conference (I read it went badly). I don't know since I stream content (no cable "news" in this house), and I already know who gets my vote in November. I've walked be a few TVs tuned to ordinary TV channels in the past couple of weeks, and at least two of them had ominous music with "Kamala is scary" ads on them. So the campaign isn't completely idle.

But I do agree that it is unlike the convict to give anyone else the spotlight without trying to elbow himself into the front (like he did at that European meeting (G7?) when he was POTUS). He probably has a "perfect plan", "very beautiful", but I don't know what it is.