It’s been known for awhile that some of this film was shot digitally, but I think this article is the first time we’ve found out it was such a big percentage - apparently 50% -
https://www.polygon.com/2020/2/6/21125680/film-vs-digital-debate-movies-cinematography

In a funny way, the fact that this is really the first time that film and digital have been seamlessly blended on a big movie is kind of full circle for the franchise after the digital innovation of the PT. We’re fully entering an era where you can shoot digital and have it look exactly like film.