Mate, come join us at the @actuallyautistic@a.gup.pe group on Mastodon. There are a lot of fellow autists who will be there to lend an ear if you need to vent or need some practical advice. I recommend the autistics.life instance. I have the same issue irl, people will expect me to be there when they need me, but now that I need someone on my side, they'll happily throw me under the bus. You're not alone, even if it's just a few randos online.