Is there a way for me to upload my fiction privately then schedule the release

#1
I just wanna know if there is a way for me to privately write my fiction without submitting the first draft.
I am just writing for fun and can be irregular in releasing.

ps - I know this can be achieved by writing content in offline and then uploading it to the RR when I finish but that's too much work for me. since I wanna write the content with the LITRPG genre that contains lots of tables and ms Word and google docs mess thing in RR for me.

if you are interested, I am currently writing this. but my above concern is the top priority