Are you using milk thistle four times a day? this will help support your liver so it can do its' job. This might help with dumping the copper. Zinc, molybendum?I am guessing if you have Andy's book you are taking all the stuff to get copper down. And also, are the b complex vitamins yeast free. Usually people have a problem with them if they contain yeast, since they don't normally have copper in them. And those with mercury have yeast.

The other thing is that chelation will lower copper anyway. So yes, it is ideal to correct the copper but if you can't you may have to do what you can. I would get the liver going better first though as good liver function is needed for chelation too.
Basically if you do decide to chelate skip the ala until the copper is down. Just do the dmsa.
I would try the milk thistle for a bit and see what happens.