Thank you very much! :)
I think that it would take a lot of writing to ever get to the point where you wrote “too" much. It’s possible to write for hours on end every day and still want to write more.
You can only write too much if you write to the point where you’re simply writing for the sake of writing, and not because you want to. If you write until you get burned out and feel uninspired, then you’ve written too much in a day.
I hope that answered your questions! Have a good week.