Aluminum Toxicity/poisoning?

My 28 weeker was a great baby. I refused Hep-b & MMR shots. But around 12 months he lost most of his words. He also became consistently cranky, always moaning, squealing, humming to things like the blender, dishwasher,etc; his feeding became an issue as well. We're now treating him for reflux & cutting out dairy cause we think he has a milk protein allergy as well.
He is not the same child, he doesn't know his own name. The good thing the drs say is he has great eye contact. So they say autism is off the list. I am thankful but still worried. They do think the regression of verbal skills is neurological.
Here are my thoughts. Vaccines still have aluminum in them and the light is starting to be shed on that just like mercury/therimsol. Next, my son was on parental nutrition/TPN in the NICU which caused severe jaundice for over 3 months. TPN can have high amounts of aluminum.
Aluminum poisoning has neuro complications. Is anyone else going through this. I feel like I'm losing it. I don't know where to go to help my baby. Isn't it bad enough that he had to fight for his life in the first place and now the next battle has been placed before us. I just hope for someone else on here who knows something or just is going through something similar so I can compare symptoms. Thanks for reading.
Debbie