You guys didn’t want to tell anybody about your fiancé’s selection because you weren’t sure if it was allowed or not, but you had no problem discussing with your school’s DSO who ended up confusing you back in October.
First thing you need to about about immigration is the fact that honesty is required, and that applies to faceless entities you’re seeking guidance from the Internet also. I don’t appreciate people wasting my time with hypothetical situations. Not presenting an accurate information is off-putting and it makes it hard to provide the right guidance.
Anyway, I recommend you go back and review my response back on October 12. It still applies in this situation even if the plan is to travel for a couple of weeks.
https://forums.immigration.com/threads/dv-2018-aos-only.336256/page-58#post-2466024