Hi,
I think that’s probably a step too far with a site like that as there are just too many things going on in that page. You would be better off looking for a responsive theme (if one exists for that version).
Otherwise you would have to modify all the templates to build responsiveness in from the start.
I have a simple demo here that shows how to create a mobile version of a table but is only really suitable for straight forward data tables. Yuou need to add data attributes to identify headings when linearised so needs quite a bit of html structure to start with.
BTW please don’t bump posts as that is against the guidelines. If a post is unanswered then you can post with more information or details of what you have tried since last posting.