Stressing so bad

I need advice what should I do me and my boyfriend live together and I already had our daughter but we pay 700 a month and we split it I stopped working cause I'm on maternity leave but I have the money for rent we both have nice paying jobs but I don't know what he does with his money because he doesn't seem to have the money for rent we haven't paid December nor January or currently February I mean he knows the landlord but still the landlord is getting fed up like total 700 up with 3 months that 2,100 what should I do 😞 and then March is coming up I got back to work in 2 weeks 😞