Breastfeeding/pumping

Hello so I have a 2 week old and I been mainly breastfeeding and pumping since I delivered my son but unfortunately my mental health has took a toll on this and I don’t feel like I physically can do this anymore so I talked to my sons dr and I am starting to formula feed now. So here we are what can I take or do to ease the pain of my milk to stop producing and such it’s only day 1 and I feel so much pain and I just want to curl up in a ball tbh. I scored really high on the postpartum depression scale so my obgyn scheduled me an appointment with my psychiatrist that I had before I was pregnant. When I was pregnant I had no struggles of mental health no depression, anxiety or even suicidal thoughts but before I was pregnant I did. This just makes no sense to me tbh idk I am trying I just was up all night and not bc my son was awake bc I literally couldn’t stop thinking. My son was actually sleeping more and I just couldn’t sleep tbh. Any advice would be appreciated. Thank you