Your plant looks great! As it is doing well, I would not repot it, you will set it back and damage your happy new root. What will hold your plant firmly in the pot is more roots so just let it grow some, keep it staked for now. The more you move them around, the more you end up wobbly. Sometimes the plant needs to be moved, but until then, be very conservative in repotting it. You might be able to pack the media in a little more firmly, but do I remember that your rescue only really has one good root? If so, its not going to be firm until the others grow in.
I've started putting some of my top heavy plants into heavy ceramic pots (preferably the ones with drain holes all over for good air circulation) to keep them from being knocked over, its a useful idea. I water them, let them drain and put them in the display pot. Some of them have gravel on the bottom of the display pot too, to keep them from accidentally sitting in water.
I talk to my plants too.