I have had this fig for many years. In the last year or so I have just pinched out areas that needed restraining and left other areas to grow out to create heavier branches where needed.

You can see the wide variation in the leaf size depending upon how the branch was maintained.

Ficus with leaves varying from small to large

Now defoliated so that branch posiition can be assessed and wired into position  if needed. New leaves will come in smaller in of uniform size.