Thanks cafeconlecheYes you can, but if you submit it at the oath ceremony, they might not accept it. They might ask you to fill it out there and then. IF you're going to a post office after the ceremony, then an online form is fine. Just sign and date it with the oath date, not before.
It's time again for one more USCIS adventure. Hopefully my last one.
Congratulations to all forum members here getting their citizenships, and thank you for sharing your experiences.
I sent in my application last week, see signature below.