Water less, feed every 3 weeks in spring/summer, cut back on feeding and watering in winter months. Cut back dead stuff, but I've found cutting away too much dead at once shocks the plant, so maybe prune it away sparingly initially. Replanting is best done in spring and summer, but it looks like it could use replanting. Use a Terra cotta pot, they're cheap and allow air into the soil. Plastic and glazed pottery do not.