Most animated films seem to be moving along more or less on schedule because the people working on them can get a lot of the same work done at home or wherever else they happen to be working.
Odds are that the film itself is not seeing significant production delays.
Spider-Man: Into the Spider-Verse 2, which will very likely be called something else by the time it comes out, was originally set for An April 2022 release before getting pushed to October due to the ongoing release date shuffle.