Flight Instructor not making entries in logbook
I was having difficulty with my flight instructor for a couple of months. When I decided to change flight instructors, and requested my logbook from the flight school, I realized the instructor had not logged any ground school time in my logbook in the section designated for the entries. He did enter three ground school times in the flight section. I had at least a dozen hours not logged and I have the flight school bills for ground instruction to prove it. Is there FAA requirements for CFI's to log this time or am I just out of luck. What should I do? My new instuctor states that I need to have him fill in the logbook, but how will he remember what he covered accurately? He never used a syllabus and he couldn't remember what we covered from one lesson to the next.