I'm looking for insights on the teaching of country dancing to young people, by which I mean from teenagers to about age 30.

Every two months I play music for English country dance, and it bothers me that so many people come once and never return. Our leaders teach about ten dances a session, and I believe that that is too much for learn. I remember how hard it was for me to learn a new dance (back when my knees were still good), and I think the new people are being driven away by the mental strain of it all.

Any suggestions from experienced teachers?