My advice for you is to re-apply online with a fresh application with just your wife's and kids' info. Remember that even if you do not submit your printed page of info with the online application your wife just did, the application ID in their databases will have recorded that you also had your info in the original OCI application submission. Who knows whether it will trigger a flag on their end thinking that the OCI submission was incomplete because your documents were not included with this OCI submission. I seriously would suggest you re-do this because like I said, you can submit a family-based OCI application without one of the parents. How do I know? I did it with just myself and one of my sons and without my wife.
For that question in Part B, you should answer yes and include the info regarding your OCI application and details.