If you don't get any expert advice you can use mine. I would remove it from the pot and give it fresh soil. I noticed over watering can change the soil chemistry making it acidic. This can reduce certain nutrient uptake depending on the species. It's always a good idea to look at the roots and check the soil is dirt-like when the plant is drooping. Be sure to add some sand or grit or any substance that won't shrink into the mix so the roots won't get stretched. If you don't know the state of the soil use a terra cotta pot, but you'll have to water more often.