I think you're on a wrong path with your chelation regimen, but you will need the input of other people concerning this. I've done my best, and I don't know whether you'll get much in the way of useful advice here. Several of the more knowledgeable posters in the Cutler and the Chelation forums have left, I think. Johnny Vegas left after forming the group, and I don't think TK or Anne post here anymore. There are some others, but they post more sporadically. I'm soon to follow them. While I hate the format of the Yahoo groups, the level of expertise is much higher there.
I'm not just trying to sell you on Cutler Protocol orthodoxy. You can see different views debated on the Autism Mercury group. Dialogue is at a more in-depth level, so you will be in a better position to decide where you want to go.