I want courage to leave

I won’t bore you with details of all the things that have been happening lately. But I know I’m with a Narcissist, I have been planning to leave the marriage after the baby is born (currently in the second trimester). I’m fed up with how he is treating me since I got out of hospital a few days ago & creating a mess in the house but expects me to clean after him. I retaliated yesterday as I’m still recovering & don’t need to be stressed out if he is not supporting me. Anyways, I’ve made up my mind that this isn’t the marriage I want to be in the long term but I’m grappling on whether to leave now before baby is here or after as I’m also worried about some practical aspects around getting the baby’s passport which he’ll need to sign the form. If I leave now, he’ll use that to control me. Anyways, ladies who left, share your insights with me. Ladies who are still in it & are planning your exit, how are you managing to keep things peaceful at home?