Desert Rose as Bonsai

Anyone out here into Desert Roses? I have I got for my Birthday in Summer of 2016. I never repotted it and was just about to do a repot, when I thought to myself…“I need to reach out to Mirai land” So, here I am…I was gonna repot in all Kanuma, then I thought, 1:1:1 …Any thoughts? TIPS…Its leggy…Ty

BonsaiGuy

Where I’ve seen them growing natively they were growing in limestone…which is pretty far off from Kanuma in terms of PH. Not sure if that makes a difference for these.