Optimizing position and movement patterns is a place to start.
Working within pain free ranges.
Take a look at the pistol archetype.
This will help identify what needs work.
Working up and down stream of the ankle will feed slack to the area.

Check out Roop and Jami’s foot & ankle series.
Roop & Jami’s Excellent Foot & Ankle Adventure | Part I
Manage the inflammatory process if that is present.

Take a look at the position of your foot/ankle in your footwear.
Lowering the chance of the foot being forced upward enough to cause the jamming at the joint may help.