Access wordpress blog on subdirectory /blog that is running on subdomain

I have my main site https://1example.com in nextjs and wordpress blog on subdomain https://blog.1example.com. They both are hosted on different servers and diff hostings.

I need my blog to be accessible via subdirectory in main site - https://1example.com/blog

I have successfully proxied nextjs https://1example.com/blog to see blog but blog's internal links, pages, posts, media is still pointing to subdomain.

async rewrites() {return [  {    source: '/blog',    destination: 'https://blog.1example.com/',  },  {    source: '/blog/:slug',    destination: 'https://blog.1example.com/:slug', // Matched parameters can be used in the destination  },]

},

I have tried many solutions but end up breaking wordpress config

Need help

solutions tried

• https://medium.com/one-weekend-at-a-time/how-to-reverseproxy-wordpress-at-blog-from-any-sub-domain-ec8e5159e305
• https://proxyscrape.com/blog/using-a-reverse-proxy-to-install-a-wordpress-blog-for-enhanced-seo