About niche site structure

Hi, couple of months ago I started building my first niche site. It's been a drag, but finally it's coming along.

Initially I found a keyword and got 4 product reviews and one general article written for me with focusing on that keyword (its kw of 2 words).

But now yoast seo plugin says that I shouldn't focus 5 pages on one keyword but only one page for keyword.

So would correct strategy be to keep main kw focused only on general article and other 4 reviews focus on LSI (related) keywords?

And interlink them all together?

Thanks,
4Architect