"Right, I can't remember what I posted already but I'm reading this and identifying with him a lot (I'm autistic and have significant executive function problems). "
Well so am I (at least I think so, more-or-less), it's problematic as I am fucking useless at getting things done.
I also tend to deflect when challenged, although I at least acknowledge to myself that I'm shit. I don't know if DS does. But perhaps it's the same. I went to see a psychologist before about executive function, we didn't get anywhere though, I don't think she was particularly into ASDs though. Actually I have got more done in the past when I have been motivated, I basically got motivated and made some money and then no longer really could be bothered IYSWIM?
Anyways I popped into see him just after 9pm, he was in his room on the floor with the laptop, I asked what he was doing and he said Physics, but I could see in fact that he was on Youtube. I couldn't really be bothered so I just left. He shouted after me that he was still talking to me.
After that he came downstairs and asked about meeting with school. I explained that the form teacher had said he shouldn't have music when working. Form teacher also said that you shouldn't get used to music because there'd be none in exams. I think teacher was talking quite a bit of bollocks in a lot of what he said, but anyway DS said he needed music to help him focus . I took the laptop off him and inspected his browser history, it showed he had accessed Youtube around 8 times in 10 minutes - he was claiming that he just put music on and that was it. I said 'well it seems like it is distracting you'. He said something about a playlist. I said it's not a playlist though, you keep going back and forward. It turned out in fact that finally at the end a minute before I had gone to see him, he HAD put it on a playlist, so that was a big 'point' to him and he got very angry because I was wrong about that, even though the larger issue of him flitting back and forwards was still there.
But maybe he can setup a few playlists and limit himself to those. I am not really sure. I know he said he was distracted by noises such as floorboards and other environmental noises, but I don't know 100% how much this is affecting - whatever his current POV is, he'll swear blind that it's correct.
As we were discussing his focus and saying that he would remove all distractions from his laptop - he has phone, ipad, and gaming PC, all with distractions, but his laptop would be his temple so to speak. He never really likes this sort of discussion, and it's quite stressful for us, as he will tend to show stress and anger on his face, and respond rudely and then deny that he is doing so. I suspect you have to ignore most of the low-level rudeness, but it's rather trying anyway.
He then complained that he wanted to do his homework and why were taking up his valuable time. I pointed out that I had not told him to come downstairs, he was the one who insisted on starting the conversation at after 9pm and if he wanted this discussion then he should expect it to take an hour or so.
Arguing about how long the discussion was taking took up some more time before I could move onto a task management app. He said he had used one before but didn't get on with it. After pressing, it turned out he had only had it suggested to him by learning support - he hadn't ever tried anything. So I installed the app for him and tried to show him how it worked. He said he would find out for himself, and I pointed out that he wasn't really likely to do that, as he doesn't initiate things - he needs to have other people initiate for him. But he was quite angry and tired at this point so I am not sure if it got through at all.
He went off at that point saying he was going to charge his phone in his bedroom - I had to say 'no, the phone goes in our bedroom' (this has been spelled out 100 times already, but he still keeps at it). I am not really convinced about the OurPact thing, as it apparently is very easy to circumvent. Enforced physical separation is more effective thing.
When I was at school I hacked the school computer network and they gave me a computer with no internet access as punishment. Got a lot of work done on that!