How Can I Stop My Protea From Dying?

Question

-two years old -60cm high -see photo

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Answer 1

I'm going to paste links to
two different articles that may help you pinpoint the problem(s):
https://www.gardeningknowhow.com/plant-problems/disease/root-rot-in-garden-plants.htm
https://www.gardeningknowhow.com/plant-problems/disease/leaf-browning-in-center.htm
If you've had an especially wet winter and/or spring, your plant may have some root rot.

Here's another article about what conditions are necessary for a healthy protea:
https://www.gardeningknowhow.com/ornamental/flowers/protea/protea-plant-care-tips.htm

It would also help to spread some mulch around the plant. That will help cool the soil and prevent moisture loss.