We have a website with approx ~1K Static Pages which is built with (html, css & JS). Everything is good & we are getting good amount of traffic/conversion as well, except the conversion is not happening well through the mobile traffic.
Note - Our current website is not fully responsive.
Among below given scenarios which will be the best way to handle it so we will be not losing our current existing traffic & ranking.
Scenario 1- We will be continuing our current static pages & develop a separate amp page for mobile visitors.
Scenario 2- We will be continuing our current static pages & develop mobile responsive pages with 20% of design & elements tweak with single handle URL.
Scenario 3- We will be continuing our current static pages & develop PWA pages with same URL's for mobile visitors.
Scenario 4- We will fully develop the PWA pages for our mobile & desktop traffic with the same URL's.