I don’t turn internet off. But I just don’t use it. No streaming services on tv either. Cell phone for phone calls only. Etc.
I used to do something I called "hardcore week" where I would do something similar. But I'll have to try a day of it since I couldn't stick with a week very often. 😃
A week is very hardcore! I usually try a day every week. I also keep my phone in another room when working at home during the day.