I don't understand this idea of changing this guy just for this particular stage of your training. If this guy sucks then he sucks!!
Burning bridges is not even an issue at your stage of the game. I'm not sure about this "team" issue you're having. He's your instructor, you're paying him, or the school, and you're not happy. Move on....
Now,......if the details that you're omitting include the fact that you live in his basement and he's married to your mum...well then that IS a problem.
On a more serious, and hopefully helpful note, don't fly or do ground every day, and don't study every night. Take a break. You're not studying to be an astronaut...
