I got a leaf cutting from this plant around a year ago and I just neglect most of the time. I only knew this plant would have very fragrant flowers when I received it. I finally searched some information about it and now I want to know how to make it grow more leaves.

I am living in Miami, Florida (a zone 10 area). I am growing it in a small pot in the patio. It had once been attacked by mealy bugs but I used diluted alcohol to clean the plant and all the mealy bugs were all gone (partly because of a sudden temperature drop to 30 something). After that two new leaves were growing out suddenly and it seems it is holding back now. The two mealy bugs infected leaves now turn light green and there are spots on them. The tips of them have burned out. Should I cut them out or leave them alone?

Here I got some photos of the plant. Hope someone may give me some advices on how to care this plant.