Well, in aviation training there is a scale with normal being in the middle and at the extreme ends of the scale we have:
CFI's who should not be teaching
the other end
Students/pilots who should not be flying
Now, I have not a clue where you and your CFI fall on that scale.
Over the years I have seen all kinds of student pilots and CFI's.
99% were normal - but:
One extreme I saw was a CFI who would not go fly if the weather was not perfect, took forever to solo her students, and after she finally did would not let them go out if the weather was not absolutely perfect. Flying with her it could take a year for a student to get ten hours of solo flight.
The other extreme I saw was a student (older fella) who had over 200 hours and the CFI (multiple apparently) would not sign him off to take his checkride. He came to our airport for that "second opinion". Our CFI that took him out (world class aerobatic show pilot) asked me to ride along and help evaluate him. While the guy could mechanically fly, i.e. push and pull on the controls appropriately, if a bit jerky, he could not seem to think ahead of what he was doing at that moment. He cut off other planes in the pattern, lost track of where the airport was and couldn't figure out how to find it using the VOR and the CFI had to give him the heading back, could make semi decent turns but not while climbing or descending. Now this guy was a professor at a college. But it was clear to me that flying was not something he could do safely. After we got out of the plane, Rob raised an eyebrow at me. I said - let him down gently - and left.
200 hours, really? That is my point, was this student treated fairly? Some of the number of hours being batted around here just do not make sense to me.
OK, the final point I will make is you need to fly with another CFI, even if just for a couple times around the pattern. If your CFI objects, then you know where the problem lies.
Agreed, but, waiting to 50 hours. The instructor should have been taking some drastic action by 15 hours. Obviously something is wrong. One has to wonder if the instructor is enjoying the easy money. Could be the student or the instructor but, it is the instructor's responsibility to recognize that a problem exist and fix it one way or the other.
Now a thought exercise for you.
Can you teach the CFI?
In other words, can you check the weather and explain things to him like he is a first time student how to read the abbreviations.
Can you preflight the airplane confidently, explaining to HIM how to check the tires, flight controls, oil, gas, beacon, lights, etc.
Can you call for a VFR departure and a taxi clearance without help (if appropriate to your airport)
Can you start, taxi, run up, without any help - all while explaining as you go along "Now on the runup pad we turn into the wind for the runup and bring the engine to 2000 rpm", yadda, yadda?
Can you explain how you decide it is safe to take the runway?
Do you align the plane with the centerline, do the final pretakeoff checks - gyro, fuel pump, trim - while calling out each item on the check list before you look at the list to see if you missed anything?
The instructor should have been insisting on these things 40 hours ago.
On takeoff do you maintain the centerline, call out your speed checks (airspeed alive etc.), and positively rotate into a climb without over rotating, while teaching HIM why/how you do each of these things as though you are the instructor and he is on his first ride.
And so forth. I won't detail it all here.
Let me point out the UND aviation department (University of North Dakota) has a whole series of teaching videos on YOUTUBE. These are free and well worth your time.
Or the King series of videos on learning to fly are excellent - if a bit costly .
I get the impression that it might not be your lack of ability holding you back - rather you do not exude confidence. You do not make the CFI feel confident that you will promptly make what ever corrections to the planes attitude or speed. Go to the airport and teach your CFI and he might have a whole new opinion of you.
Be not be afraid to give me a buzz. 989 284 fortyone twentytwo I'm always willing to offer what advice I can.