Hi
This might be of some help, but might also be pointless. Just wanted to give you a handhold.
Without intentionally comparing myself, to your DS.
I'm 25, I have severe ADHD and mild autism. No intellectual disability. I currently receive pip, and I work full time as a support worker (explaining how that works to DWP was fun :) )
I take high dose, slow release stimulant medication to help me function correctly in the form of Elvanse. I was one of the first in the UK to be prescribed it many years ago, and it changed my life.
I struggle with many things, and if it weren't for my partner I don't know where I would be right now. At 21, I attended my first year of university and left at 24 after completing 2/3rds of it, as I kept failing to engage with the faculty.
I was told growing up I'd amount to nothing. That I'd be a drain on society and I might aswell be locked up, or in care. My parents fought for many years to get me into an SEN school, which had its positives and negatives.
I struggle so much with daily life that I started to believe what everyone was saying. I thought I'd be alone forever, that I'd never work and that I'd never succeed.
I've never really had any friends aside from one or two here and there because people can tell right away there is something not quite right with me. I have sensory issues and a debilitating spending problem.
As you can see I'm a little bit of a hot mess.
But society is changing. Slowly and surely. I'm no longer seen as hopeless. After working for several employers who all sacked me for the way I am, I found one who actually supports me in my role and provides those important, reasonable adjustments.
I'm not where I want/wanted to be in life.
My few friends I have are buying houses and earning 45k a year. I'm earning 24, and renting.
But I'm still leaps and bounds above what was expected of me.
Your son may not mature into someone who can live independently, or work a full time job, or, he might just need a little more time. there is no way of knowing. I remember my mum crying when I got accepted into university. She cried when I passed the probationary peroid of my job. She has done so much for me, and I know she worries about me all the time.
But at 21, I was very much like your son. When I wasn't attempting to study, I was playing games for 12 hours a day. Ordering huge amounts of takeaway food and obsessing over the news and Internet memes.
At about 24 something in me suddenly clicked and everything fell into place.
Again I don't want to compare myself to your son. I don't want it to come across that way at all.
But please don't give up on him. The system stinks, the system won't help him. But a mother who will walk through hell and back to see her son smile, will make the world of difference.
You're doing an amazing job. Keep up the good work.