The over-reading
One failure mode is the over-reading. The reach watches so closely that any small piece of unenthusiastic feedback — a flicker on their partner's face, a slight pulling-back — registers as having failed at something. The pleasure that should be the point becomes performance pressure.
What helps
"I'm here. I'm good. You're not missing anything." "Slow down, I'm with you." "You don't have to read me. I'll tell you." What helps the over-reading isn't reassurance after the fact; it's the partner interrupting the reading loop in the moment. Naming what's happening, plainly, gives the reacher somewhere to put the attention that isn't a question their own body has to answer. The fewer guesses you have to make about whether you're “getting it right,” the more the giving can stop being performance and become what it actually is.