Open Question: How do I rent my House to my disabled mum?

I bought a house 2 months ago and i am struggling with all the bills and mortgage after a drop in wages. My mum is disabled and cannot care for herself. She gets housing benefit of £103 per week, plus council tax paid etc. Can i rent my house to my mum and still live there? This way i get the help of extra money in housing benefit, i help my mum and can keep y house. What is the process to complete this transaction? Thanks for your help.