New here and still learning about Mastodon - please be patient with me. And if there are good tips about using this, please let me know!
@WarInTheFuture you should be able to set up a connector to retweet your toots or retoot your tweets, so you only post on one and it shows up on both.
https://medium.com/@pimterry/sync-your-mastodon-back-to-twitter-3c72f2bc8626
Sync your Mastodon back to Twitter - Tim Perry - Medium

[Edit: once upon a time the below was the only way to do this, and there weren’t many other options. That’s no longer true though! Nowadays, I’d recommend looking at proper tools like…

Medium