Hello--
I can concur that it takes time. Our son was diagnosed by Dr. Latimer last May and received IVIG in early June. She warned us that it might take as long as 6 months for the IVIG to take effect. He has been on Augmentin since May and will continue it through the school year. His primary symptom was OCD and attachment anxiety. We couldn't take him to school because of his panic attacks. So we chilled last Summer after the treatment, and then to help him with re-entry to school in the Fall we started him on a low dose of an SSRI. We were reluctant but felt we needed to help him any way we could, and school is the best place for a 7 year old. It worked. The first few months were challenging, but I think the combination of the SSRI helping him build his confidence by making it through each school day, and the 6 months it took for the IVIG to kick in, led to him being able to go to school all day, alone, happily starting in December.
Every child is different, but I can attest to the truth in that it takes time. Although dealing with Dr. Latimer can be frustrating, I believe in her judgement.
Hope this helps. Don't stop looking and trying. All the best to you--
OBDad