I think some daily soaks might be in order in this case...in addition to a properly warm and humid enclosure. If you choose to soak in a tub of water...make sure the water is not deep enough to cover the snake's whole body (would greatly increase the risk of drowning if the water is too deep) and make sure the water is tepid...which means neither warm nor cold. If it feels warm to your touch, then it will likely feel too hot for the snake.