You could try making a list of topics beforehand, and come up with two or three comments you can make about each one. If you're meeting someone for the first time, small talk like the weather and current events will do, if it's someone you know, try starting a discussion about something you know they're interested in, and let them be the one to talk incessantly about something for a change. Keep in mind that discussing special interests isn't automatically an autistic failing, we have the right to discuss our interests as much as NTs have to discuss theirs.
_________________
"Survival is insufficient" - Seven of Nine
Diagnosed with ASD level 1 on the 10th of April, 2014
Rediagnosed with ASD level 2 on the 4th of May, 2019
Thanks to Olympiadis for my fantastic avatar!