Remove Deezer Vast from upcoming subscription

Hello,

I am a 2 years t-mobile subscriber and I have had deezer vast included in my plan, now I have an upcoming 2 more years contract with which I got an iPhone and I switched to Apple Music that works better or at least more reliably (at least with controls on the apple watch), so I have tried to remove deezer vast from the subscription which hasn’t started (it starts in June) (I am happy to keep it with the ongoing subscription), is there a way to remove deezer from the new contract before the contract starts validity or I have to keep deezer for 2 more years regardless?

Best

Francesco