Gee, good guess! They can't lose more then 1 more or they are done. I would think if they win all the rest it would be in 6 games. Or, if they lose 1 more only it would be in 7 games.
Obvious but thanks for the input - lol.
Now, if you had guessed that before the series started then I stand (or sit in this case - lol) corrected.