Instead of making several posts, let’s say, for one topic, why not make multiple pages in one post?
Write your post, as you normally do and when it comes to the part where you want to paginate the page,
click on HTML view and paste this:
Then type the rest of the post.
The part where you put the nextpage code, it will somehow show something like this (depending on your theme) at the bottom:
Page 1, 2, 3
The reader can just click on the page links to continue to the next page.