I (29M) struggle to emotionally support and comfort my autistic girlfriend (25F) when she’s upset. How do you comfort your partner when they’re struggling?

My girlfriend and I have been dating for just over a year and a half now, and I’ve noticed that after she gets upset over something regardless if it’s minor or major, I usually freeze instead of help her through whatever is going on. I want to be more emotionally available and help her through everything and support her rather than leave her to fix things by herself.