Whenever I see an an indie author with a big success story it happened over time and never in a minute. A year is the shortest timeline I have ever read about and that was one person's story and there are millions of us. Most big success stories are well over a year. I am at the beginning of indie, I launched late January of this year. I look at the upward progress of my novels as the positive I need to keep at it. I have also learned that the more books that you write the better, so the more you write the better, period.
That was my plan, too. Write, release, repeat, ad nauseum.
June, 2013: Started writing my first novel.
October, 2013: Published my first novel.
December, 2013: Published my second novel.
April, 2014: Published my third novel.
May, 2014: Published my fourth novel and quit truck driving, seven months after publishing the first book.
August, 2014: Earned over $20K in one month.
...
January, 2018: Published my 19th book, earned $70K in a single month, and crossed the $1M mark in total earnings.
July, 2019: Published my 21st book. That's six years after starting the first, averaging a release every 3.5 months.
January, 2019: Expected to pass $2M in total income.
2021:
Planning to earn $1M in one year.
2023: Retire and go sailing aboard Write of Passage.

And I'm a midlister. It happens more than you know.
