I now have an unofficial dx - in that both GP's who see me regularly (and have a special interest in ADHD, and ASD, in both kids and adults) agree they'd be very shocked if I wasn't dx if I went for it officially - however as the outcome would make no difference to either treatment (I can't have any of the relevant drugs) or workplace... theres little point seeking it. I agree with that.
I don't work 'in the workplace' - thats how I deal with it. I am self employed, I do a number of things that to a varied degree I can juggle around how I feel and what I fancy.
I have over the years, developed a good network of people who know me well and want to work with me or give me work, within the parameters of what I can do.
So I am freelance writing, writing (another) reference book, co-writing a fun illustrated book (and illustrating it), illustrating in general, and am sub-contracted to provide expert support via live chat and phone calls to another co. that works within my field of expertise.
The set shifts of the latter give me some frame work but the job itself means I can read fb, mn, play games etc whilst being on shift. I can also write and illustrate as long as I can drop what I am doing to answer a question or answer the phone, thats fine.
It suits me down to the ground, but its not a lifestyle everyone would enjoy - I do have to save hard and ensure there is a safety cushion if I am ever ill or work dries up for a while. I spend a fair bit of time trying to ensure i have some passive income (merch from drop ship, book sales) to guard against total poverty in those times.
I earn enough to keep two adults and some dogs, frogs n fish alive, but we don't live in the lap of luxury by any means, and we are reliant on my disability benefits too.