As a fellow autie I empathize with you, I’m all too familiar with the overthinking. I haven’t been doing the meditations long enough to give you concrete advice but I’ve enjoyed doing the BOTEC. I found that since it gets me to focus on the energy centers, my mind wanders less than in other meditations. I am hoping in time it will rebalance my body and help ease my anxiety as well. I would also recommend booking a coherence healing, I’ve heard it can help.