When the soil looks dry, water it thoroughly. It won't require very frequent watering with so few leaves. If you were watering every week, it might be every two weeks. I don't use a rigid schedule though. Watering can also be dependent on how much heat there is how much humidity. We still don't know where you are located. Update your profile to show your location.
One sure way to tell when a jade is begging for water is when the leaves show a bit of shriveling. When you water, you want to be sure that the root-ball really does get wet, particularly if you allow the root-ball to dry out excessively. I water with a gentle-rain attachment on my hose and will do it twice, waiting a minute or so between waterings.
