I currently have three Twitter accounts that I actively maintain albeit in three totally different ways:
The @bruno19070 one is the oldest one. It dates from July 2008, and I maintain it manually in the sense that I post tweets manually once in a while. I used to Tweet more frequently, but I guess my audience moved to Facebook, and I moved to where my audience was. It's also the account that I consult, blocking fake profiles on a regular basis.
The @willow9040 one dates from February 2017. It is semi-automated in the sense that I hardly ever tweet from that account directly (except maybe a tweet about this post). This account mainly retweets posts from the other two accounts.
The @directmediatips account is fully automated. It dates from April 2017 and I hardly ever touch it. It runs completely on its own.
Now let's take a look at the number of followers. The number of followers on my personal account varies between 6,300 and 6,400. The number goes up and down, but it more or less stays within those limits with an all-time high of 6,015 followers on December 30, 2018. It was as low as 6,347 on November 10, 2018. Today, the number of followers is 6,377. That number has been stable like that in the last 4 months after the turmoil in October 2018. My account hat 6,511 followers on October 1, 2018 and dropped to 6,230 on October 22. That was the result of big cleanup operations by Twitter.
It's quite frustrating to see that my fully automated account recently surpassed my personal account. That happened somewhere between February 12 and 13, 2019. On February 12, @bruno1070 had 6,385 followers, whereas @directmediatips had 6,384: one day later @bruno1970 lost one follower and dropped to 6,384, whereas @directmediatips won 11 with 6,395 followers.
I created that @directmediatips account for fun, as an experiment. Now it's more successful than my own account. If only I had some use for it...