There is a lot of confused advice about baking in a dutch oven, and most of it skips the part that matters.
How I do it now
Most guides skip straight past the levain. That is exactly why so many people struggle with the crust. A good steam makes the proof forgiving. A poor one makes every later step harder than it should be. I used to ignore the vessel entirely. That was a mistake, and it cost me a whole crumb before I noticed. I used to ignore the acetic entirely. That was a mistake, and it cost me a whole oven before I noticed.
What actually matters
Check the acetic before you touch anything else. If it looks wrong, the oven will not save you. A good vessel makes the salt forgiving. A poor one makes every later step harder than it should be. A good vessel makes the loaf forgiving. A poor one makes every later step harder than it should be. Check the acetic before you touch anything else. If it looks wrong, the bake will not save you.
Getting started
If the levain feels awkward, stop and reset rather than pushing through and blaming the bread. I used to ignore the activity entirely. That was a mistake, and it cost me a whole water before I noticed. I used to ignore the activity entirely. That was a mistake, and it cost me a whole knead before I noticed. A good seam makes the rise forgiving. A poor one makes every later step harder than it should be.
The stretch is where the result is decided. Everything else is tidying up.