How to set default decimal places in modeling(sketch)

I want to set default decimal places in modeling(sketch)

With this setting, I expected what I want.

But when I make a new modeling file, this preference setting is still '1'

And

after I change this (in drafting preferences), I can get 3 decimal places in sketch...

So I have to change everytime I make a new modeling file.

How can I make 3 decimal places in sketch default..?