Was sharing an idea. Sometimes my index finger acts like that bratty toddler at the mall who needs a good spanking because he keeps getting away from the family. So I do what most do today instead of a good spanking and put a leash on it.
Seriously, playing sometimes the least little “fly away finger” motion will cause me to miss the second string and sometimes it will cause me to hit the first string by accident. This solution seems to help some. Its still in the trial run. I’m hoping in time I can take it off and my finger will have the muscle memory.