Vietnam e-Visa departure question

Hi!
So I messed up and followed the rules too close.
I applied for a Vietnam e-visa and put my exact arrival and departure date (11/4-11/28) instead of just “90 days”.

Well, it bit me in the butt because my aunt wants to move my grandpa’s ceremony to after the 28th.

Do I need to reapply for a new visa if I need to stay an additional 2 weeks?

I feel so dumb that I just didn’t list the entire 90 days 🙄