Would you cancel this AAward or just not show up?

Last March 31 I began travel on a 230K AA OneWorld First Class AAward. I traveled 11 out of my 16 segments. I have the rest of my segements reserved for February: first class ORD-DFW-YYC-DFW-ORD-XXX

Due to other travel it is impossible for me to finish this travel these 5 segments before March 31.

I assume there is no way to save or salvage these segments for later?

Would you cancel [is this a $100 change ] or just not show up?

Any other ideas?