You need to work out what the root concern is before you can deal with it. Some possibilities include: lack of belief in your own abilities, lack of belief in the aircraft, lack of knowledge, lack of experience, and fear. These would all be dealt with by the additional training and experience that comes as part of doing an aeros course.
I'm a firm believer that an FI should be comfortable in any reasonable flight regime of which an aircraft is capable and would suggest some basic aeros experience to any pilot.
HFD