My hair is much longer than the second picture. I brush my hair a lot, I almost never put any heat to it and I let it air/towel dry. I condition my hair a lot and I drink a ton of water. Brushing your hair a lot will stimulate the hair follicles so that it will produce more oil, which will lead to hair growth.
Hi , I recent, h got my hair cut so it could grow longer than it was but my hair was as long as what you are looking for, for me it took 4-6 months if you don't use a lot of heat and use conditioner at the ends of your hair.. ( make sure it has protein ) oh and when you do use heat use heat protectant.