Mobile version of current Wordpress Website -URGENT

Our company website, [login to view URL], is currently using a purchased Wordpress theme through Themeforest called "Medicure." This theme automatically creates a responsive version when looking on a mobile phone. We would like a separate theme for mobile users which follows the same branding but is easier to navigate and looks mobile versus a squished normal website. Some challenges we have faced in doing this far include that our theme uses custom post types (see "Doctors" and "Services") which we have had trouble displaying on previous mobile themes - it requires navigation of the FTP which we are not knowledgeable on. We would really appreciate the help of someone who has done something like this in the past and feels 110% confident that they can accomplish our goals. Need this ASAP within 4 days max.