I just got off of the phone with Middlesons new team of therapists. They want to set up an appointment time with the family members that he will have the most contact with on a regular basis to discuss "Educational Stratagies". This will be going things I have already asked the fam. to do, like putting him in simple situations where he has to use words he already knows, songs and games to play with him that help with his vocabulary, and help with playing 'with' someone, not alongside them, and AVOIDING SITUATIONS THAT CAUSE MELTDOWNS!! Both my mom and my MIL will be there, step-dad and FIL cannot get the time off of work, but both are already much more accepting and helpful than Mom and MIL.
I am very excited about this, as maybe hearing from a team (4) of professionals what I have been saying for the last few months will get them to understand, or at least be more acomadating to his needs.
If after the meeting, they still are not compliant(in general, not just the holidays) would I be out of line in only allowing them time with him when I am around? He needs certain routines wherever he is, whether I am there or not.