That’s very true. Though I think they said there were some things Rian requested that they didn’t change either, so even if he asked maybe they were satisfied with that moment as-is.
I think that first shot of Han pulling out the dice could be cropped and altered to match the existing footage.
For the shot of him putting them up there, you could create a plate of the Falcon that you could put Han in, since he isn’t blocked by anything for the most part in that shot. Though you would have to find/generate a background that would match.
Another option would be to create a new shot. You could use the TLJ insert as a plate and then have a hand-double hang up a pair of dice that you might could find online. That would require green screen, and actor and props so that could be more challenging than the first option.
Another issue might be continuity, because Han puts his hands on both chairs when he enters, and I’m pretty sure they rest there until he exits. You could possibly cut to the dice insert without the dice as if he looks up there to help with that issue.
Otherwise, if all of those options are too challenging, at the very least you could reuse the TLJ dice insert as if the dice are still there and Han is just looking up at them.