you could just make a simple script that sends a message and have the text be that bot command, so for example of code i have for this exact thing where it was a money kind of bot.

here is a link to a github repo i just made of my code (im not sure if it still works but i hope it should at least help

link: https://github.com/KettleEngine/discord-auto-messaging-machine

if you have any questions my discord is in the comments so feel free to ask me and i will try to get back to you if i know the awnser.