You're feeling overwhelmed because you wandered into a completely different skill set.

Yes, but you don't send people to train for marathons as long as even their walking is wrong. Just yesterday we had this simple exercise to quickly hop back and forth over a pool noodle. I counted 5 different ways I was able to screw it up: not always landing on toes, sometimes landing on the noodle, being slow and stopping to think before a jump, feet not flying parallel but more like a step over, accidentally kicking the noodle away. Basically poor motoric coordination, the result of 37 years spent thinking living in a computer chair and doing some body-building to put on muscles optimized for the mirror equals "fitness". It does not, and it is a tough lesson. I think this needs to be sorted out with further practice before sparring.