My hair is oddly different lengths? Pic included, will it grow back by sept 7th? (school start)?

I'm guessing it's summer so what you have to do is let your hair breath and relax. Let your hair grow. And if you have to straighten your hair straighten it twice a week and use heat protection so it won't fall out. Put more of hair to the right side so it could look more equal. But let your hair grow out don't use so much heat.