This is my first clonal cultivation.

So, you have a salt build up from too much nutrition and not enough run off. Which has the ph out of line causing lock out. Which is showing in different signs the plant has. The dark green in center of leaves is also the key indication of my diagnosis. As I have experienced this first hand when I started growing years ago.

I remove the shortened leaves as soon as the new buds sprout because they become useless. They supported the plant during root formation. The rest is up to you: rooting hormone to enhance rooting, mycorrhizae for nutrient absorption, and an NPK that’s not too strong.

Keep misting the leaves until you get roots and new growth a of the existing leaves might die off as it generates new growth like 10 days you should be getting new roots and new groth should start too