Nevermind, (I think) this is solved. Created a footer-blank.php and a page-‘id’.php and made the page-‘id’.php load the custom footer-blank.php instead of the theme’s footer-main.php
The footer-blank.php looks like this:
<div id="secondary" class="sidebar-container" role="complementary"></div>
And it pretty much did it. You can check my site’s homepage now: https://rohitpalit.com
The page containing the blog posts (https://rohitpalit.com/blog/) is showing the theme’s default footer.