Agree with Patti. It is normal for those lower leaves to go like that. Those are the older leaves. It is trying to adjust to the change in light levels too, so it is trying to follow the sun. I find my echeverias grow actively in warmer conditions in late spring to early summer vs. my semps that prefer cooler conditions.
If you do cut off the top half, recommend you callus the bottom end or apply some cinnamon. Your overnights are getting cooler, try to keep it warm and dry as it tries to make new roots.
