I've been through ECT, so I know what you are going through. As unmotivated as you may feel, force yourself to get out and take a walk if the weather permits, maybe in a mall if the weather is uncooperative. Do that every day while you wait for your next treatment. How many treatments have you had by the way? In time, the effect should be more lasting. (Something to look forward to.) Keep yourself busy and distracted, as hard as that may sound. That will get you through until your next treatment.