Having my desk in my bedroom is one of the worst things for my mental health. I know you said you can't move your desk for work, but maybe you can spend all other time at another part of your place? Even just like a little desk or couch near a window in another room. I used to eat breakfast/lunch at my desk too, and it helped to just do that literally anywhere else. I do it on the couch and coffee table in the living room now lol. Not sure how big your apartment is though, so it's understandable if you just don't have multiple rooms/spaces to break up your different daily activities.