like _peachmilkis said you can't really force folks to read or interact with your work but the best that can be done is trying to post consistently if you're able, leaving little reminders at the end of an episode (if that's something you're fine with adding), or finding things to include within the author's note to get interactions like questions related to the episode or something similar
It's all a matter of trial and error but hopefully you'll find something that sticks 