Hey @Scandi Thanks for the response! I have an update.
So today around 8:00am, I entered the Federal Building in downtown LA. When I checked in with the reception, the lady told me they just brought back same-day oath! And sure enough, I took advantage of it, and became a citizen at 10:35 am this morning. It totally took about 75 mins from the moment the interview started to when I received the certificate. LA FO really upped their game. At least in my case(I applied in mid-July).
Anyway, thanks for your help!