So should I get a new instructor?

Definately.

I presume from your second sentence that this is his MO. Let him
practice on somebody else.

How much of a hit would I take changing instructors this far in?

You're not "this far in". You're far enough in so that it would be good
to see different approaches to flying.

Jose
--
"There are 3 secrets to the perfect landing. Unfortunately, nobody knows
what they are." - (mike).
for Email, make the obvious change in the address.