Doubt about the expiration of my pass

Hello, I have already purchased the Interrail pass, but for personal reasons I will finally not be able to make the trip I had planned for this August. I have read that I have 11 months from the moment of purchase to activate my Interrail pass, but that it can also be deactivated later. My question is whether I could activate the pass, for example, in November and deactivate it immediately afterwards so that I have 11 more months to go and be able to make my long-awaited trip in the summer of 2023 without my pass expiring and without losing my purchase. Thank you very much in advance.