Published on 12, July, 2020
This seems rather unnatural. I have never allowed a boyfriend to have a say in my sons life if he cannot interrogate his own bias. It should be an easy decision to leave these people, so it sounds like there is something going on here. Decision aside, there could be more going on to make it difficult.
Would his mother be open to therapy? It could start with her seeking professional counsel on better understanding his needs and over time one would hope she'd ditch the leech.
In medical papers, it's being discovered ADHD and Autistic Children have less GABA, the thing which shuts down an over-excited brain or hyper-calculating brain which might accelerate into anxiety. In other words, the difficulty going to sleep is most likely biological. However, this will be frustrated further by toxic relationships and unresolved issues.
I would speak to an authority on the matter. Maybe start here https://www.relate.org.uk/what-we-do