Start by building a real understanding of minor harmony. Body and Soul moves through rich minor sounds, and to play it well, you need to hear where the chords come from, how they relate, and how the progression functions as a whole. Focus on how tonic minor works, how dominant chords behave in minor, and how these sounds connect.

Next, develop your minor language so you have something musical to work with over the changes. Body and Soul moves slowly, which means every note matters, and you need ideas that can carry you through the form without losing direction. Studying players like Roy Hargrove will give you a model to build your foundation of minor ideas.

Finally, get comfortable with the minor ii V progressions that show up throughout the tune. These are often the spots where things fall apart, especially with the half-diminished ii chord and the altered dominant sounds that follow. Learning to hear and outline minor ii Vs clearly will help you move through these sections with confidence.