How to make the correct uniqueization of the online store?

Question

Search Engine Optimization

Good afternoon!
There are 3 online stores that are loaded from one base 1c.
All 3 are partially in the index, but this result needs to be improved.
I am a new employee and I was given the task of "pushing" one of the stores forward with minimal action on the remaining two stores.
The main question is whether it is worth closing all technical characteristics in noindex ? After all, they are an exact copy of our other two sites. Or with the help of unique metadata and internal optimization, can it be left for the index? I once came across information from Yandex, where he spoke about the similarity of the cards of online stores, but alas, now he could not find it.
As I understand it, if I make a description of each of the sections and try to uniqueize the pages as much as possible due to the "Related products", "You watched" blocks, will it give a positive result. It is not possible to describe each product.

Answer 1

If the contacts on the promoted site are different from the other two, then you just need to do a thorough optimization of the promoted site.
Basically, focus on commercial factors, read the manual on them on Habré .
Focus on optimization, not uniqueization. Your descriptions are certainly good, but not the main thing!

Answer 2

is it worth it to close all technical specifications in noindex. After all, they are an exact copy of our other two sites.

the technical characteristics of all sites are the same, that's why they are technical characteristics. Look at the tops, they do not close.
This is how you dilute the keywords. "Related products" is certainly good, but if the page has enough content about the current product. There are better reviews, articles, reviews, etc.

CEO

is the Chief Executive Officer. Write SEO. You cannot take an abbreviation and change the Latin alphabet to Cyrillic. It's like USA instead of USA