Decision fatigue is real. By Wednesday, you don't have the willpower to chop veggies. That's why we prep.
The Buffet Method
Don't prep full meals. Prep ingredients. Roast a tray of sweet potatoes. Cook a batch of quinoa. Wash your greens. Chop your peppers. Make a jar of tahini dressing.
During the week, simply mix and match these components into "Bowls." It keeps things fresh but ready in 5 minutes.