Don't be tilted from the redline especially in your case because your sample is really small. The red line is where you're suppose to be, so eventually you'll cross it. It can happen a lot that by the end of the day, your EV line is 4BIs higher than your green line. But another day, the green line will be 4BIs over the red line

If Jan217 didn't clear it up enough. The EV line is based on odds basically. So if you're AA vs KK, AA has 80% to win. So if you win, your EV line will go up 80BB (if you're both 100BB deep). If it happens that you win 4 times and lose once in this situation (what's suppose to happen), you'll be right where your EV line is.