I think you should do it now. I feel like the sooner you cut him off, the better since he’ll be out of the way sooner for you and he won’t have to wait to know he couldn’t win (ღ˘⌣˘ღ) You could also wait if you wanted to be “petty” so he has to wait longer just to know he would be blocked, but I don’t know if I’d want you to stoop to that level Σ（ﾟ∀ﾟ*)