No man - Butt is lousy but he has limited improved potential to score something as opener. I mean lesser of evils under the given circumstances.
So 2 changes should be a given - Butt for Farhat and Mazoor or Alam for Misbah.
3rd change could be Faisal for Malik. Why not try bhanja for Malik - see if he has something to offer…they are both a toss up.