Looks more like a Mentha than a Salvia. It’s rather etiolated - needs more light.

Thanks , it has full Greek sunlight:-)

That’s as may be but it’s still looking leggy. The length of stem between the nodes is elongated.

any tips on a possible solution?

Is the stem round or square? It looks round in the photo...

its more round than square -smells great :-) (i just touched the stem)

The square stem is visible in the upper portion but even if it wasn’t it’s still a mint. The squareness is often not pronounced.