Shortly before that post, I had actually just transferred it from a pot to the ground. After the move, things were still not looking up so I thought it was not working. But a few weeks later, lo and behold, the yellowish leaves have been replaced with fresh, healthy green leaves!
Before & AfterIt seems that a little care goes a long way after all :)
On another note, it seems that our yard has a penchant to grow things on it's own. For example, these lovely curry leaves inexplicably appeared in our yard a few months ago and have since grew to become a prominent resident. Needless to say, we are more than delighted with it.