How long is normal for my hand to only work correctly for a few minutes. I am on the second A minor section and switching between the chords? I get to where my hands are doing pretty good switching and then they just go dead and I cannot hold a string without buzzing or muting one of the others. I am only able to get 10 or 15 minutes of practice before my hand just goes dumb. Is this normal, does it pass? Sorry if this is a dumb question, but I am 36, and this is where I give up every time because I always feel like my hands and fingers aren't learning or up to the task.