Blog Pages URL Editing and Old Blog Pages Redirection

If you wanna change old blog url format (url/[year]/[month]/[post-name]) to the SEO friendly format (url/blog/[post-name])

First of all, you need to change the permalink settings to the following: (Settings/Permalink)

!!Please remember to add "/blog/%postname%/" to the custom structure.

Add the following codes to the .htaccess file located in the following directory:

RedirectMatch 301 ^/[0-9]{4}/[0-9]{2}/(.*)$ /blog/$1

Save it

Don't forget to check the old link and ensure that it redirects to the new URL.