I book 4 ticket with TAP for LIS/Rome for April travel from Chicago. Tickets were booked in mid 2023.
My traveling dates can change for later in the year or even next year in 2025,so what are my options ?

1) Cancel all 4 tickets and loose everything.
2) Cancel the dates, keep the ticket but move dates to later in the year. This case I still have to pay the cancellation fees and the new ticket prices correct ?

What will be the best way out with less $$ damage to the wallet. Original tickets were like $550 per ticket.
All 4 tickets were on same booking not separate.

Edit: I was just looking at my booking and observed that my flight from LIS to FCO Rome and FCO to LIS are cancelled . My final destination was FCO Rome with layover in Lisbon.
If that's the case then I should get a Full refund or a full voucher credit to be used for future flights with TAP or associate . Correct ?

I talk to CS rep and he ask me to submit for an online refund. I can get a voucher or a full refund since flights are cancelled by TAP. I went online and request a full refund back to my CC.
I forget which CC I used though...