This is depression. Right now, it is no one’s job to worry about your effectiveness in performance and absolutely not to pass judgement on yourself for those considerations. It is your job to work with your therapist, heal, and self empathize. Try to remember that depression is not something you have but something you lack. Depression usually presents as a lack of motivation. So, focus on you and fuck anyone EVERYONE who says otherwise. If it needs to then productivity will come. And if not, who cares?! You do you cuz!
Lol