Saving my succulent!

[KTMay]

I think it's a jade tree, or something that resembles it..
There was a secondary shoot, about half the size of the tree that died. This is when I realized I must've over watered him:(
I removed the soil, and am letting what is left of the roots dry out.. can I replant him like this? Or do I have to take cuttings and start from the beginning?
And if so, how do I propigate from cuttings?
Thank you all for your imput

[Asica]

If you do not see any rot (just smell it ), you can plant it as is. It will be fine. If there is rot, just cut it off, leave the cutting in dry dark place for a week and then just put it in soil. After I plant succulents, I usually wait a week before I water them, it seems to work for me.