Slightly dificult to tell from a picture..
If I look at the branches I can see long bare branches. Do you get any budding along the bare branches? The tree is sparse with all fooliage at the end of the branches, making it slightly dificult.
As said, I cannot really tll from just pctures, but have you considered just wrking with the left-hand side of the plant? There is a split intoo more or less equal trunks. Using just the left, and sl=plitting the large vollume of foliage in several layers might be a route to take.
else, something like this one of mine might work (In middle stages of development, getting the foliage on the right spots), but you need to get backbudding first: