Thank you for the reply!
Drainage is decent but could be better. Pot is rather large so should be enough to keep soil damp but I had a recent fungus gnat infestation so I covered the soil in sand and it was difficult to tell how damp/dry the soil was. Roots should be relatively cool, it's in a shady location, but it did get into the 90's here recently (although it got no direct sun during that time).
Had it for about 4 or 5 months. No problems until recently.