Summer work. I've let it grow strongly all spring. I could have worked it back in April after the new growth had hardened off, but life got in the way and I didn't. If I had, I'd be working the second push now rather than the first.
See how strongly the top has grown? If you leave it too long like this, it will totally take over and the lower branches will weaken and die off. Top has to be cut back and thinned. Leaves should be removed to balance the growth and strong branches at the apex should be pruned to weaker growth. Leave more leaves and stronger growth on lower branches.
Scott