I have never completed a DS-260. However reviewing the questions, it asks
- Have you ever used other names (i.e., maiden, religious, professional, alias, etc.)?
- Do you hold or have you held a nationality other than the one you have indicated above?
How did you answer these ones? Assuming you did not?
I'm guessing when an application asks the applicant for several important pieces of information that were not declared, then simply completing a new application with all the important information after the fact would not give me, as an immigration officer good vibes about who is sitting in front of me. Good luck on your journey.