I would use a shorter bar. With my head just over the bar, I am on my toes. So, when I get tired in my workouts, I assist myself with my toes and lower as slow as I can without assisting myself.
Pull ups are easier for me. I can do 2 of those in a row now with not so perfect form. I can get about eye level with a pull up, so I know how you feel.
Keep at it, you are very close.
Congrats for having the cajones to post a video of yourself. That shows how serious you are about simplefit.