Can i put towards the housing benefit they will give me to add up to the rent? example if they gave me £80 housing benefit a week but the rent was £400 pcm could i add the extra £80?

Yes he receives middle rate DLA

Hello I'm 19 and currently caring for my father who suffers from mental illness. I quit education to look after him and the job requires me to do a lot of work daily so i decided to start a carers allowance claim ( in the process now ). I'm just wondering though would i also be able to claim income support or any other benefits? Also I travel over 15+ miles a day on train & would like to live closer to him am i eligible rent a DSS property? Thanks in advance for those who take there time to answer these questions