Hi Debbie,
Sorry to hear of the dilemma which you and your husband are facing.
Do take a look at the Spring 2016 copy of the Myeloma Matters magazine where on page 10 and 11, there is an article on the role of the welfare rights advisor, who I suggest you speak to. You should be able to find one at your Macmillan centre where again they should have an office at your local hospital.
They should be able to advise and offer independant support on all of your concerns especially about early retirement and any benefits which you may be able to claim. Anyway, hope this kelps and good luck to you both.
Regards,
Robert