SOPP427: Since then, my playing has deteriorated

This question was sent by Marjorie. And she writes: Thank you! You were very helpful. My problem: I passed my Grade 7 for Associated Board Organ Exam about twelve years ago. Since then, my playing has deteriorated. I play for church services every Sunday, but I am not challenged. I play a two manual tracker organ with limited stops, and only a bourdon in the pedal. I took my exam on a four manual Cathedral organ. My dream is to play fluently on the organ. Pieces grades 6 and 7 standard. Thanks -Marjorie