Moving a lightsail instance from subdomain to subfolder

Hello,

I'm trying to figure out the best way to map my blog to a subdirectory instead of a subdomain.

My main landing page is on aws amplify (www.example.com) and the blog is deployed on aws lightsail (blog.example.com). I'd like to have my blog at www.example.com/blog.

Would appreciate ideas on the best way to do this.