The good news is"a lot of new growth" so watering is not to be blamed and I do see the old foliage looks pale so fertilizing was a good idea. I vote to cut the plant back by at least one half to encourage more bushy side shoots. Pruning always stimulates growth so this may give you the more full plant you want. The droop is most likely a left over effect of the transplanting shock or being moved to a new location with more sun than it was used to. Try to avoid another transplant until next spring. I do think this plant will adapt and be thriving soon. Keep growing, Marianne Binetti