I've had my Ficus lyrata for about eight months now, and I'm still figuring out the watering rhythm

I've had my Ficus lyrata for about eight months now, and I'm still figuring out the watering rhythm. It keeps dropping leaves whenever I think I've got it right, and I'm wondering if it's thirst or overwatering. The new growth looks healthy though, so maybe it's just adjusting? Has anyone else struggled with the fiddle leaf fig's moodiness, or am I doing something obviously wrong?