Saving money for baby

Any tips for saving money for when baby comes?. I wasn't expecting to get pregnant this soon but now that I am I want to know the best ways to help put money aside. I don't have benefits with my job (yay 😒) and I don't make much but being that it's so physical I doubt I will be there for the full 9 months. I know my SO will be able to take on most of the bills when I'm not but obviously I don't want him to take on everything on his own.