More than one chance to do Yahoo e-mail transition?

I just installed Linux on an old computer and when I went to check my Xfinity e-mail, during the login it prompted me for the Yahoo transition.  I skipped that since I was just trying to verify that the computer worked (it did).  I shut that computer off.

I then went to the computer that I use daily and there was no prompt for the Yahoo transition, nor was there any e-mail from Xfinity concerning the transition?

Did I inadvertently blow my one chance to do the transition?  Or is Xfinity going to repeatedly pester people to do it?