Here are some suggested organisations that offer expert advice on special needs.
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Article about why parents of children with SN might not keep in contact with friends sometimes -
I found it was rather the other way round. once it be came obvious that my DC was different, a lot of 'friends' just started to cut me out. not sure though, they must have been worried their PFBs could catch my child's autism. I was very hurt at that time but gladly moved on now.