The plant likes lots of water, heat, and sun when it is leafy (normally during summer). But you should water much less often when it is leafless (like now) or nearly so. For now water when the soil is going dry... maybe once every week or two. Lots of light is important. Water very sparingly in the winter. Wait and watch for when your plant leafs out (should be soon) so you know when it is in active growth and more thirsty.