You know it should be kept outdoors, but anyway you keep it indoors?? Take them outdoors emedantly.
If you are in the nortern hemisphere, now os authum and trees should go dormant, hence do not need fertilizer.
Water is never on a scedule, but varies over the year. When the top of the soil apears dry, water abundantly over the whole surface until there are a steady stream of water pouring out of the drainage holes. This can mean 2 times per day in the peak of summer but less than once a month in winter. Just look on the surface.