Depending on the country you live in you may be eligible for government assistance. I know in Australia the government provides a carers pension for those people who are unable to work due to their carer role. If you are Australian then you can check my hubs for more information.
I would check with a local carers group to see what is around in your local area. You can often find information on carers groups at your local hospital or community center.
good luck with your search.