vsmom

The bleaching is whats killin your hair. Once you put bleach over bleach over bleach, you are headed for major breakage.
I would definitley give it a rest for a while. Pick one shade and stick with it. I would also get a super intense protein packed conditioner. Try Bumble and bumble Deeep. Good stuff. Use it twice a week for 20 minutes at a time. If you're not super attached to it, maybe cut some of the dead stuff off.