Hi Claimant
You need to get advice from your local Welfare Rights Organisation;
advicelocal.uk not only for you and your husband but also your husbands father as he may be missing out on Pension Credit Guarantee, free tv license, winter fuel allowance and others as PCG is a qualifying benefit.
You can become the carer of your husband, your husband can claim work capability assessment, we would advise you to seek advice.
Gary