I want to issue a challenge here. Write for ten minutes on Saturday and Sunday if you do not normally do so. However, I want you to focus on your "head game" here; I am less worried about what you write and how much. Work on relaxing into your writing; on enjoying it, and challenging the "tapes" that lead to anxiety, stress, and self downing.
Writing is not inherently stressful; our own perspective and thinking is what makes it so. Change your relationship to writing, and you can write a good deal without feeling overworked. Bring a bunch of "cognitive garbage" to writing sessions, and even a few minutes feels awful.