Yes

No.

a delay would probably depend on the level of filming progress.

they are probably almost done if not done already.

I'd say so. No Time to Die has been pushed back seven months, Fast & Furious 9 has been pushed back a year and they've just announced that Mulan, The New Mutants and A Quiet Place II have all been indefinitely postposed. I won't be surpirised if The Eternals gets delayed as well as Black Widow.

I don’t want to be delayed again like the rest of them