My boyfriend planted this bonsai from a seed almost a year ago, so not exactly sure which type it is. We keep it watered and it sits on the window in our bedroom, where it receives fresh air, sunlight, and wind. The past week or so we noticed that some of its tiny branches were becoming dry and fragile. This morning, when I went to water it, two more of its branches/leaves fell off completely! Now it only has two tiny leaves on the very top. Hopefully you can see the small branches that fell off on the soil.
The base of the sprout is still very strong, and the plant itself is not drooping or wilting; has a twig-like feel yet flexible and strong. We are complete beginners at caring for a bonsai, and are wondering if anyone has any experience or tips regarding what to do? Should we replant the entire bonsai? Maybe water it more often (soil was completely dry a few days ago, even though we water nightly, so maybe need to water more)? The bonsai is inside all day, and I am not sure if I should be putting it outside at all. We live in Hawaii, and the days can get pretty hot and humid here, especially at this time of year. Additionally, the sun is really strong; I've had other plants get sunburnt. Any help is greatly appreciated]1