I just posted on another thread answering your questions -click here-

I see that you are in warm climate, you may need to water bit more often. Your TT is overpotted IMO - pot is too large. Roots and stem looks OK to me. Terracotta pot dries up faster than plastic, that may be another reason for plant being thirsty.

Try testing with a bamboo skewer (or chopstick) - inserted deep into soil. When taken out (you don't need to leave it in for too long) and it feels dry, time to water. If it comes out damp/cold, and perhaps tiny particles sticking to it, there is still plenty of moisture. You can also judge by how heavy the pot is: lift it right after watering to feel the weight. Lift it again after few days (you may have to do this few times to get 'feel' of it). Very light pot is thirsty :)

How long since repotting and subsequent removal for root inspection?

I agree you are probably under watering it.

I'll reinforce what Rina said. You need a pot about half that size. Clay is good.

Okay great!! Thank you all I will plant it in a smaller pot and try more water too!