It was brutal (in a relaxing way)! As a complete newbie, I found it surprisingly had to fire just my thumb and middle finger combo (or even thumb and ring finger). I had to pause the video, do a slow p-m and m-p drill until I can connect and engage the middle finger "at will". Did the same for ring finger as well (p-a, a-p). Then I could get back to the exercise (i.e. pi, pm, pa and the reverse). Planning repeat this drill, in the coming days hoping it (mind-muscle connection) will improve with time. Sharing in case anyone runs into this and freaks out. Well at least I did. lol. Happy practicing!!