My lease ends this month,and I cant afford to pay so I am moving out,what will happen need advice see details)?

I cannot pay this month's rent of 700 and I am moving out the end of the month which is the 30th,my lease ends this month.I have a security deposit of 320 but they will be keeping it for cleaning expenses,and I will not be getting any of it back.The apartment is too expensive for me,and I have struggled for my whole 6 month lease to pay.I had signed the lease a month before I had an accident and injured my leg and back.At the time I was set to move into a one bedroom apartment for 540 a month,but what happened was that it was an upper level unit and I was bedridden after my accident and completely unable to walk up steps,there was no other one bedrooms available with my leasing property on the first floor,so they agreed to transfer my lease to a 2 bedroom lower but it was 700 a month.I havent been able to work,and due to the extent of my injuries im permantly disabled,and i am still in the proccess of getting on disability,but dont have it yet,i have also been put on a waiting list for housing.I have just put down a deposit on a cheaper apartment,and I am set to move on the 30th,but I am broke and unable to pay for this months rent.I only have a few hundred dollars which I will have to give to the moving company to move my stuff out.I have no friends or family willing to lend me any money.And I am on my own,my father co-signed for my lease and I am worried that not paying might mess up his credit.What are the consequences of not paying?Can I offer to pay the remainder of my rent in installments?Next month I will not be able to afford my new rent plus my back rent to the place I am in currently.What can they do to me if I do not pay?Will I be forced out earlier then the 30th?I dont have anywhere to go?what should I do?