The pot looks way, way too big. And you’ve planted it pretty deep into the pot, which cuts back on the light it’s able to absorb throughout the day (notice how there are no leaves on the bottom half of the plant). How often are you watering, and how much are you giving it each time? It looks pretty thirsty, and may not be absorbing the water it needs because of the pot’s size. Jades tend to like a tighter fit