M.H.
Keep a normal routine. Pj's for bed,when you get up..shower and get dressed. Try do go do something once a day. Have lunch with a friend or your mom or whomever is around. Go out for dinner and leave the baby with a trusted person, to take an hour or hour and a half break. Put your make up on even if it is just a little. Try to put normalcy back in your life, even if it is just for you. Look at your accomplishment a beautiful baby boy who needs and depends on you and you can provide.
Good luck