The surest way I know to make my fig's leaves turn yellow is to over water. You migh also consider repotting to a larger container. I'll defer to more knowledgable folks here.

In my opinion,your climate is too hot for fign in pot.
Plant in ground in a spot with Shade in the afternoon,and sun in the morning.
If you do not have,backyard to plant in,then.
Plant pot in pot!.
A 6 gallon ,in a 8 gallon as an example.
In between,you can place,the light popcorn used in shipping.
Make sure the outside pot is white ,if not paint it.
I would also get more reliable fruiting cultivars like Adriatic JH,and Malta black,because what you got might need pollination,to keep fruits.