I do not know what to do.
Same advice I gave above:
Ask the teacher who might be a good fit and have a one on one playdate with some activites planned in case there is a gap in play.
What about boy scouts, sports, art classes? Things that all the kids have the same interests...
Role play on how to ask other kids to play, sit by them at lunch, etc -
my son(10yrs) is exaclty the same way... recess/lunch time, he plays alone, etc...
breaks my heart to see him sometimes walking around looking lost...
the last couple of years I've enrolled both my kids in art classes( they both love to draw), our