You have 9-months to use the federal benefit assistance (including SNAP, P-EBT, DSNAP, etc). Benefits not used within 9 months get removed from the EBT card. Use the card. Each purchase resets a timer for another 9-months.
If you get a letter saying your benefits will be removed, the letter is meant to inform you that it has been 8 months since the EBT card was last used. You have 1 month to make a purchase or the benefits get removed. If you don't make a purchase, then any remaining benefits can get lost.