I don't have any experience in this, but would be curious to see what happens if you make a couple of screenshots of your current website, pack you source code into a txt file and paste it into gemini pro https://aistudio.google.com asking to get some feedback on how to improve, and then ask to implement it (maybe using claude [code?], it may work better)
Can you just change the wordpress template and call it a day?
(Disclaimer: I only saw my wife editing her WP site. I never tried to use it myself.)
https://docs.anthropic.com/en/docs/agents-and-tools/claude-c...
It's amazing. You just say stuff like "use tailwindcss and make it look great!"
https://github.com/andrewarrow/xvibe