Mom owns a house where I live. How do I get a mortgage on my Mom's house when I have very little money?

My mother owns a town house and I am disabled and the caregiver. If she applies for Medicaid she has too many assets. I want to keep this apartment but don't make enough to qualify for a mortgage. we also have a second rental apartment. I have been told that everything we have to sell everything and put my mom house in my name. I don't know what to do. My mother also claims the rental income because I can't I will lose my benefits. My mother doesn't have to get Medicaid right now but she will need in house caring in the future. I want to know how do I claim the mortgage income in my name without losing my benefits in My mother has dementia. Thank you for your help.