Well, when looking at your photo my first thoughts were that your tree was a bit lanky. If it were MY tree I would do it MY WAY, viz., to. prune back hard to outward buds to try the "vase" shape, as with most fruit trees. Almost to start again. These would grow vigorously next year. Late summer I would prune back again to encourage further branches. If you can forgo fruit for a couple of seasons I think you,would get a bushier tree. Then prune as originally suggested. I'm open here to accusations I'm changing my advice but this is what I WOULD DO MYSELF. But I'm always experimenting and trying things using some logic as to how it SHOULD turn out. Others may disagree. I couldn't tolerate such a lanky tree as yours, would have pruned earlier, but would have a go at getting the tree shape I want with a view to heavy fruiting in a few years' time. It's easier with spur bearers...you can have great fun with them....bending branches down or in weird and wonderful ways. A friend of mine used to do things like this to,produce loads of fruit on fantastically shaped trees/bushes. I think if you could train for shape and bushyness now and then revert to recommended pruning later you would get good results ........?