brazilian raintree bonsai

I'm a beginner & got a Brazilian Rain Tree couple of months ago. Growth is really vigorous & the plant is my balcony with indirect sunlight (through shade net as direct sunlight may scorch the leaves due to the tropic climate). I've been feeding NPK fertilizer once 15 days & water whenever soil...

I’ve never had an issue with this Brazilian Raintree I’ve had it for about a year and just recently I have started to water with a pan underneath it which was not allowing the water to drain completely for up to a day at a time then the tree started to not open sleeps all the way in the daytime...