Both need continuous water flow.
But you don't have to practice every day.
If you deliberately go to work for an hour every day, and it is the kind of running errands, it is better to practice it once every two days.
Different styles of writing require different ways of writing, such as writing, seal cutting, official script and cursive script.
Some require the thickness of the pen to remain the same, while others require changes.
Also, it is best to find some characteristic copybooks corresponding to fonts and practice them carefully.
Of course, the quantity still needs to be there.
I have practiced the preface to Lanting many times.
Calligraphy is not a day or two. You can't fish for three days and dry the net for two days.