Amazon Affiliate Niche Site Question

Hi, Bros.

I started a new tech site with only 4 articles. I already have another tech site with good traffic on the blogger platform (custom domain) with AdSense. Now, I want to convert my new tech site to tech-related Amazon affiliate niche site (Indian Amazon Associate). I signed up for the associate account in which I should make 3 sales within 180 days.

Should I delete my previously written 4 articles that are already ranking below 50 and 30 positions? or Can I start to work for niche content on the same new site? I'm very much interested in making a silo.

Looking for a suggestion from niche site experts.

Thanks.

you can use the same content and add more articles on your new site.

add more articles and update existing content if they target specific keywords

Delete or no delete doesn't makes any difference as they are not ranking.
So I would rather just keep them as it is and find more keywords around that niche. Also better to target US audience instead of Indian since the conversion rate would be low unless you have a traffic that you can utilize like Whatsapp groups, FB or Telegram groups.

Never, literally, never delete articles. Maybe they don't rank at this moment but in the future, once you get more authority on your site they will rank alone.

For example 10Beasts, no matter what content he puts its ranking alone on #1 in matter of month or 2

Can I show my author profile in amazon affiliate site? or it should be like a company website without showing profile? I want to know whether personal writing tone will give good conversion and trust.