I am a landlord. If the rent was going to be late I would be thrilled if my tennants came to me and said "can I work out a payment plan. evictions are expensive. being without a tennant is expensive. Tell him wat charities you are looking into., Ask him what kind of help he accepts from charities (I accept some but not all because I have to qualify too) and if he has any suggestions. let him know you would like to stay until the end of your lease but that you don't think you can afford the rent any more. Clean your p0lace very well and let him know it is show ready at the drop of a hat. If he can get renters in before you move out it will minimize the impact it will have on him. i have the same set up with my lease (they agree to pay all 12 months regardless of if they live there.) as you have. So long as I don't have a gap I rteally don't care if a tennant fulfills their lease. So long as they leave it clean and ready for the next renter to move in and we have a next renter. but I have to ba able to show it without much warning for that to happen (I have a duplex so there is no model unit).
in the mean time try i would give your landlord some of the money you have. even if it is $25. I don't what kind of place you are renting but if my tennants don't pay my kids don't eat, my electricity gets cut off etc so having them pay me any amount is helpful. It also shows me they are taking action.
some options for finding rent - talk to yuor welfare social worker. she may have some suggestions. I know the city here does some sort of emergancy rent relief (one month of rent - they called me once but I declined to accept. i had already filed an eviction notice after 9 months of late/no rent. it would have just prolonged the inevitable and I suggested they use the money to help her find a place within her budget. She quit her job to stay home with her kids which is all well and good but you cannot afford a $600 house when you are only getting $300 a month in income, anyway.) Do you have a job? will you be getting one? If I know I was just holding on for the next paycheck I would be more than willing to wait. Get a note from your employer stating when your next/first paycheck will be arriving. what are you options for moving out? can you find a place? It pains me to say this but really if you do just up and leave what is the worst that can happen. you are borke., your rent is late. you have no money and things are not going to clear up in the morning. is it going to wreck your credit? chances are that ship has sailed. are they going to sue you? for what? I have several tennants I could have sued for thousands of dollars in damages and back rent but for reals, all I would have had was a bunch of legal fees and a peice of paper saying I win. They did not have money to pay me, a pay check to garnish, a tax return to garnsh, a trust fund to cash in.

: really it was to my benifit to just let it go. I was just glad to be riud of them. SO really I wouldn't stress the whole lease agreement, breaking it or even back rent. if you have a place to go I would just go. but be sure the place is spotless when you leave. if it can be cleaned clean it. every nook and cranny. if you are going to stiff your landlord for rent and remainder of the lease you owe him that much. you will still lose your deposit but whatever. don't worry about it. honestly if my tennants cant pay the rent (and sometimes things happen and you are just no longer able to pay) I would rather they looked honestly at their situation and said "I am sorry. I just can't. I am going to go so you can rent to someone who can pay you" than drag it out because of their lease. But you have to have a place to go.
I hope you can find a way to work this out.

But first and foremost I would be honest, and would talk to him as soon as possible. if you stay keep him updated daily/weekly with where you are at. I have forgiven hundreds of dollars in late fees and stuff just because my tennants we honest and let me know what was going on quickly. or because they made an honest effort to make payments and keep me informed.