How is it to stay with the husband who lied to you before marriage about his conditions

I am married to a man who is my coysin his parents are muslim and follow islam , befor our wedding nobody told us that the man does not follow islam or any faith he is an atheist. I learned about this after a year or marriage when he got frustrated on me urging him to go and offer salah and other deeds . He told me about veing atheist , then on confirming some of his family came clean that yes he does not practice islam anymore , but his mother refuses to acknowledge it and says that you should make dua for him and he is just on a wrong path eventually will return to islam As he does not follow islam he refuses to financially provide for me , i got pregnant before knowing about his beliefs now i have a daughter , i dont know what to do what would be the best course of action