Is this natural for my sedum (sedum cauticola) to go from this:


Here is a more pretty before picture taken last June:

I think something is eating it? What should I do? :(

Close up of the nibbled “stalks”
Please pardon the weeds. I left my gardening gloves at my in-laws and haven’t been out weeding in some time.
I am in zones 5-6 (SE Michigan) I tagged but not sure what else to tag this post.
As always, thank you so much for your help and suggestions!