Hi and Welcome to the forum, you might want to have a look at the following FAQ which explain where everything is
Welcome to Benefits and Work I'm sorry you and your husband are going through this
If/when your husband's SSP ends he will be able to claim ESA. Until then, I think the only things possible will be 'in work' benefits such as working tax credit. I'm afraid we do not offer advice on these, so please don't take my word for it! You might want to put your details into a site such a 'turn2us' to see if there is anything else available to you.
www.turn2us.org.uk/ If the time comes to claim ESA and/or PIP don't forget to make full use of our guides.