Bipolar husband

Im supposed to be getting married this Friday! We have been together for four years and have had many ups and downs. Breakups, hospital stays, etc. he is now showing signs of mania again and we are waiting to meet with his pdoc. Im really scared of him never finding stability. When we first met he had two jobs and was doing so well, but his toxic family has definitely contributed to his depression and mania. In the past our breakups were always for the same reason, my daughter and him not wanting to be a Dad. But he has said that stemmed from his brother telling him to leave me and that I just want a father for my kid. Even though she has a father we just are divorced. As the day approaches Im worried that he wont be able to get back to where he was when we first met, and that Ill end up being the one working all the time and supporting him. Any advice or helpful words would be appreciated