I don’t know much to be useful in id-ing on sight, but can you describe the conditions it’s been in? Is the soil well-draining? How long does it take for the top inch of soil to appear dried out, and how often are you watering? Did you repot it recently, and/or is the pot the right size (just a bit bigger than the roots)? How often are you using fertilizer? Is it getting any direct light? How many direct and indirect light hours total do you think? Is it autumn where you are and it’s adjusting to less light, or vice versa?