Teach someone to speak English. That's how I got better at small talk and I've got the auties. Everyone is coming into that interaction with a handicap and the intent of both parties is to improve. In my case I also made a friend.

I've also found reading what I type outloud to be very helpful. There was a disconnect between my writing voice and speaking voice as I was so much more than speaking. When I had social awkwardness and in the moment knew if I could only write it out it would be clear I got so frustrated. Bringing them to the same level of competence was really helpful.