Sidebar & posts integrating

I have a pretty technical question here so I will outline the scenario of my website:

My website has a sidebar with posts and adverts in it. And my website displays posts on the homepage (which I changed the limit from 10 to 99999999 as I wanted it like a timeline)

All is great except now I have 50+ posts, when I am browsing on my mobile all the content of the sidebar comes below the posts. For the adverts, people need to see them as they pay us, and with the current layout nobody will ever see the sidebar because of the infinite scrolling of posts.

So ideally some of the sidebar content must be integrated within the posts on mobile.

How is this possible?

Kind regards,