people tend to comment on my post as soon as I upload it. I wrote 1 fic and 1 original novel, but both had good traffic of comments. I never waited for comment and keep my SH tab open. As soon as there is a notification I will check it, replying to a comment is a good manner if you want to keep your readers entertained. And if your readers asked you the future plan of your novel, tell them to inbox you. Just a suggestion, if you got a lot of comment, the traffic on your novel will increase because most of the readers love interracting with author.