Help with Propogation

I finally moved somewhere I can leave this guy outside where he can get enough sunlight. Unfortunately, his stalk cannot support his new growths and I want to try and keep him alive. I live in northern Arizona and make sure to keep it in the sun out of the cold overnight. There are two main offshoots that I would like to separate and replant to hopefully give him a better chance. Is it possible to somehow cut off the stalk/roots and have the cut sections survive? Thanks!