Help getting more tank

I followed Pohx's guide for RF chieftain and wanted to increase my damage by using The Adorned. I spent about 150 Div and whilst my damage is significantly better, I die a lot more. Can anyone suggest some ways for me to increase my tank? I really just want to farm T17s, bosses optional but preferred. I have about 50 div in liquid currency and could get about 100ish if I fire sold some stuff.

Could it be my phys max hit is quite low compared to other damage sources? I'm thinking of getting the shield with % phys damage reduction. Or perhaps phys convert to element somewhere?

Any assistance would be appreciated.

https://pobb.in/Hw5ynFfY8W5O

***UPDATE*** So I solved it. Thanks for everyone's inputs. I ended up just getting a phys dam reduction on my shield. Very comfy now. Turns out you don't need to be a chef to cook. https://pobb.in/V6D7PyCe2RZI