Doesn’t work for me. The breaks break my focus entirely.
What did work was “if I can study for 20min, I will have studied enough for today.” Which sometimes followed with hyperfocus resulting in studying for a time. 20min or 2hours were both victories in my book.
That “I have to finish” only made me more reluctant to start. Was able to drop it by learning how to let go of perfectionism.
It’s better to do 20min quality, is better than nothing or 7hours of unfocussed slogging.