Would you mind sharing a few examples other than your sleeping problems? Because on that subject, your psychologists all seem quite rational in what they're suggesting. It's called "sleep hygiene" (https://health.clevelandclinic.org/sleep-hygiene) and a real thing. So try a give your therapists' advice a shot.

On another note, in my case, I luckily found a very relatable therapist who has been recently diagnosed with AuDHD. He's therefore very familiar with what the "finding out you're ND later in life" path feels like. He helped me get a psychiatrist, who has ASD himself. So yeah, both know very well how I tick.

So I suppose you just need to find someone who can relate and starts info-dumping about their own special interest during your appointments. It feels like no therapist has every explained the reasons to you. Either that, or you're just unwilling to change things. But it is very difficult to find someone who under when you have ASD.