Husband considering giving up work to care for me full time, how do we go about this?

Hi everyone.
I'm new to all this so please be kind :-)
A little about myself: 
I'm a wife and mother of 3 (only the youngest now at home). I got cancer 18 months back and had treatment which seems to have been successfully however due to the treatment I have been left with nerve damage to my spine. Also I have Spondyloarthritis both give me chronic pain every second of the day/night.
Things are only getting worse and it had come to the point where my husband is thinking about giving up work to care for me full time however we have no idea how to go about this so any help from you guys would be appreciated.