There are services that will do this for you. The Author Marketing Club is one service that purports to do this, if you are short on time and patience. You still have to do some of the work yourself, by using their submission tool. (note: this website is not affiliated with the Author Marketing Club in any way.)
Here is a list of multiple places to submit your Kindle book while it is in the promotional period:
We checked through the links, and most of them are still active.
Are you an author who has used this service or something similar? If you have, we would love to hear from you and get your opinion on what worked for you, and what didn't.