Is there a 1.20 and up port planned at the moment?

There absolutely is. Development will likely start October 9th, and it looks like development will not take very long to complete.

Can't wait to see it, yours is probably the best sleep mod out there. (Commented for notifications.)

Hey! Took me a bit longer than I anticipated, but 1.20 and 1.20.1 has been released, and 1.20.2 is on the way shortly. Thanks for waiting. Enjoy!