Let me be the black sheep in the herd and say that my sweet tamaring seedling are not the easiest plants for me. Most of the peoblems with them for me ,are in winter, they always lose their leaves, and try to generate new ones after which due to low light levels / inside home conditions, grow weak and shed right after.
I have two that i planted in the greenhouse, which defoliated and are probably dead. In the same greenhouse i am growing guava, coffee, carambolla ,avovado, jackfruit ,mango and others that overwintered fine.
Come spring one i put the potted ones out ,they leaf out and turn beautifull again....a shitty plant for me definitely ...