I used to be one. Contact your council and find out about respite care. Every couple of months my charge went away for a wekend. At first I planned so much, to sort out my wardrobe, line kitchen cupboards even go into town...the first couple of tmes not having to get up to do the toilet/showering was nice, and I found I slept...and slept and slept, re-charging my own batteries
If respite isn't available to you, then try and contact one of the charities that help, eg: Macmillan nurses. Good luck