Hello, I tried to increase my practice from 30min to an hour (split it into 20 min sessions x3 each through the day). No problem. Did that yesterday. Today I have tried to do 1 and half hour practice. I played 30min this morning. 30min from 6-6:30pm and then i picked it up at 10pm (almost 10:30 now). After the 2nd line G I am getting all this double buzzing stuff happening. I just cant play the notes clear. Have I practiced 'too' much for where I am up to? Should I push it and keep going or when that starts to happen, leave it alone?