My Princess tree - (Paulownia tomentosa) - year 2.....

The princess tree flew thru the winter, had few nice flowers and now is growing.....I water and fertilize it regularly....this model is about 10 feet high....there are 6 lateral branches.....maybe I need to prune it back so it branches a little lower. to the ground....these protrusions are about 8 feet above the ground....
Now I just read where someone got 18 feet of growth in one year.....I think I need more fertilizer.....Maybe I need to quit thinking and just go away and let the poor tree be itself......oh hell no........