I have 2 accounts in Instagram. One is like a real girls account other one is a backup. I'm using the mother and child method to get more followers. Set the main account as private and post pics/stories to get the followers in your backup account, never forget to tag the main account in your every post in your backup account. And please use safe hashtags that used by real girls. Instagram blacklisting the hashtags these days, so if you continue posting with black listed hashtags, Some times your account will be disabled automatically. So in this way you can protect your main account. If Instagram keep blocking your accounts try changing the device, I mean you can use a PC to post, at least stay in PC for 3-7 Days. After that you can shift to mobile again.