Congratulations on making the fantasy playoffs.
Now, don't overthink it.
While Deshaun Watson was a player to downgrade last week, he still belonged in the majority of lineups. Facing the New England Patriots is difficult, but so is facing Watson! He wound up as QB2 with 27.9 fantasy points. Imagine missing out on the playoffs because you benched such a key piece of your team?
Barring injury, you should be sticking with the cornerstones of your lineup in these final weeks of the season. So the Kansas City Chiefs have to deal with a strong Patriots defense in Week 14, but you shouldn't be making an effort to look for alternatives to Tyreek Hill.