@canyakker I've raised so many monarchs. One thing that never gets old is that the caterpillar sews a silk button to grab onto when they go into 'j'. When they shed their skin, the stem at the end of the pupa has teeny little hooks on it. It hooks into the button like Velcro. The whole process is akin to hanging by one arm on a high while wearing a glove, then removing the glove without falling.