I once chased a soft lens problem that turned out to be stabilization fighting me when the that model was resting on something solid. Turn stabilization off for tests on a steady surface and use a fast shutter to eliminate shake. Switch to single point focus, aim at a contrasty edge, half press to lock, reframe, shoot.
Do not forget the rear glass. A smudge on the back element can haze the whole image more than a front smudge. Clean gently only after removing grit and if you see streaks, keep at it until reflections look crisp. If the results are still foggy in good light, back up your settings then reset the body and test again. If it is still soft, time for service. Happens.
Pick a wake time and stick to it, even weekends. Get outside within 30 minutes and cut caffeine after lunch.
I park my phone in the kitchen so I actually sleep. The kids wreck evenings, but the anchor is the wake time.
