LST Training!
It's Low Stress Training, but it's training to do what?
Right now those lower branches will do less than the upper branches - the best growth always goes to the upper branches, specifically the tallest one.
Spreading lower branches to be lower won't make them grow better, they will just be flatter and grow even less than the upper branches. A person might as well cut them off and give all their energy to the upper branches.
Sorry if I sound harsh, but that LST trains towards smaller lower popcorn and a taller main cola.