Making blog comments indexable

Site URL: https://www.guaduabamboo.com

Hi, does anybody know if it impossible to make blog comments indexable for the search engines? There are very valuable comments on some of my blog pages but they aren't found in google which is a shame as this could contribute to more traffic.

You could create a testimonial page, copy and post the comments there each having a link to the the original blog post. You add a title to each repost like "What people are saying about ..........." That page would show up on Google console. 

I am doing something similar now by copy/pasting the comments in a text box under the blog post. But it's not the best solution. I still wish there was an option to make comments indexable.