I think there are multiple, I read an article recently where it was stated by an expert. But checking back now they don’t link any sources except the name of the expert, which seems to be a respected expert in the field, but that means nothing in the end.

This is one of the papers I could find within 2 mins, but I think there have been multiple papers on this.

https://www.nature.com/articles/s41562-023-01791-7

There has also been a lot of criticism on the original study that said blue light from phones was the issue, so there are probably a lot of response papers to be found about that.