Q.Dwarf bottle brush
Dwarf bottle brush planted about 2 weeks ago does not look good. It is in a sunny location in a very large pot. Water every 4-5 days. The blooms are turning dark and I don’t see new ones coming on.
Your dwarf bottle brush probably experienced a little bit of transplant shock. The best thing you can do for it right now is to give it proper care and a little patience. Be careful not to overwater - allow the soil to dry out between waterings. Also, be sure that it isn't exposed to temperatures below 45°F/7°C as this plant won't tolerate the cold.
More information on transplant shock can be found here:
https://www.gardeningknowhow.com/plant-problems/environmental/learn-how-to-avoid-and-repair-transplant-shock-in-plants.htm