Re: Developmental Delays in someone else's child? Need advice.
I would stay out of it. You expressed your concerns now the only choice you have to make is to or not to continue care.
He would probably benefit from intervention but he needs to see specialists and not have those on the internet guessing diagnosis. There is probably a lot more in the family history than you know or even they know and that is where to start. There are many of us who will NOT use early intervention through the state - I would not for personal reasons and they aren't the be all and end all. Given their situation, it would not be what I would recommend vs. finding really good specialists to look at the full issues. Early intervention don't have the full training a specialist does. BUT, not your child. You mentioned it and leave it at that.
Mom to my wonderfully sweet toddler who is the joy of our lives.