Help! Severe hair loss six years out! Ideas?

My hair is still sheading alot after my iron infusions in July.  I do feel better and I do work 2 jobs.  Rarely a day off between the two.  I try to get my protein in but that could be my problem.  I keep up with my iron and vitamins now so it must be the protein.  I do notice alot of short grey hairs LOL, sticking up when I have my hair pulled back.  So maybe its growing back some but it still sheds terrible..If it wasn't for my thick hair I should of been bald.