I have 3 of these and two look completely dead with brown leaves and the third one is getting
worse every day. Only a few branches are green. Should I cut them down and get rid of them
or is there anything I can do to revive them?
Bottle Brush Trees can die from root rot, stem disease, and Leaf Spot.
Well draining soil is key to these plants health.
The link below may help you review the care needed.