in the last few days, I received over 3000 notifications per day for file update of Baganator.
also over a 1000 for Syndicator.

There was always a lot, but at different time of the day which I image would coincide with an actual file upload.
Now I can have over a 100 for the same timestamp.

Could it be an issue with the way you upload files to Curseforge? It never happened with other addons that I follow.

I disabled the notifications of both for now.

Thanks

You'll need to report this to Curseforge - I don't have anything to do with how their systems process files.