Beginner Gardening: Angel trumpet, 1 by Tanyusha

Tanyusha wrote:
I have one more problem: angel trumpet tree. The same story: leaves fade and fall off... Even new tiny one. Something is eating it also, you can see it on the picture: the green (still green) leaf on the back.
It breaks my heart, because I planted it in memory of my cat after he died.
The tree was doing just fine: huge leaves, beautifl flowers, blooming non-stop... that heaven lasted for a 2 months. Then -- it stopped blooming. Faded and turned yellow. I fertilized, sprayed, put a fresh soil... Anything else I can do to save it ? Or, maybe something I SHOULD NOT do ?

Tatyana