Hello Friend, Good that you are seeking a help here. Depression is not just an emotional disturbance, but it also affects your body. That's what you are experiencing by over sleeping. You need to address it immediate else it will further aggravated bodily discomfort weight gain, body pain, lack of appetite, digestion issues etc. No worries. Depression is treatable through counseling session and few lifestyle changes. Reach out to me online for further evaluation and recommendation..