Hello and welcome. Thank you for sharing this part of your journey.
I just came out to my close family myself last month. It took me 4 tries.
I had originally planned to come out on my birthday, I thought for many weeks on what to say, but when I tried to steer the conversation towards autism during my birthday dinner, I was ignored and talked over.
I tried again a few hours later to slowly approach the subject subtly, but I was dismissed and invalidated.
It took me many months to try again. The 3rd time I was again invalidated "But you're not autistic though....?" was all I got. The day after, I finally made an appointment with my doctor to get an official diagnosis and the day after that I just bluntly came out and said I had an appointment the next week. They seemed slightly taken aback, but they instantly accepted me and I felt relieved. All it took for the first stage of acceptance was making the appointment. I still don't have an official diagnosis yet, but my doctor saw fit to refer me for one and I'm on the waiting list.
I still have a way to go with full acceptance however. My strongest traits are still invalidated on a daily basis. "But you didn't have behavioural problems as a child" and "It's just a confidence thing" are the top 2 ways I get invalidated so far. I'm still working on teaching people by linking them to official NHS information about autism.
They told me to stop trying to make my environment “safe”
This is just plain wrong and highly invalidating. We absolutely need an environment which is safe by our own definitions and consistent access to one for proper mental functioning, both day to day and long term.
only people similar to me will understand.
This may be somewhat true for some people, but it still feels invalidating and dismissive when people put it like that. My go to phrase is "You don't necessarily need to understand, but please just listen and accept."
All the best to you as you continue on your journey.