CTO was another broken website handed to me to fix. As usually there was a lot that worked and a lot that didn't. So what I did was install a new version of the theme. Rebuild the look that needed it, then simply copied over the code and third party assets that worked. As this was a specific custom built website due to how the client doesn't want a checkout process right now (that's coming soon). Customer instead request for quotes or can apply for an account then can see pricing etc. Which in itself was custom as we had to use the Shopify liquid to work out different prices for different cotenants and different discounts for different clients. A job like this was just under 50 hours to complete and I had quoted between 50 and 60 so managed to get it done faster than I thought due to the sheer mess of the website.