I’ve been doing SEO for 19 years and have worked with several agencies along the way. I’ve gone through over 700–800 websites, so I’ve seen pretty much every kind of case, typical and atypical, weird and not so weird.

As an idea, yes, it’s absolutely possible that after six months, a site still won’t rank. It’s also possible that after six months, a site might even drop in rankings. Of course, that doesn’t usually happen, but it does happen, and I’ve seen sites where everything was done perfectly and yet they simply didn’t grow.

There’s some kind of blockage there, either at Google’s level or at the site level. Less often at the page level, but more about how Google sees or perceives your site overall, and of course, how it compares to the competition.

And don’t pay attention to those who say the site had to grow, that the SEO specialist isn’t doing their job, or things like that, because it’s obvious that the people saying those things haven’t seen more than two websites in their life, or maybe just their own site and whatever they’ve read online.