How can I cope with all my work without causing a flare?

Learn to pace yourself. Not everything has to be done all at once – and plunging into a frenzy of activity is only going to lead to a flare-up of symptoms that will cause you to get even further behind. Break chores down into smaller segments that can be done in a reasonable amount of time. Do not push yourself until you are too tired to move. Do a bit, then take a short rest, then do a bit more. Try setting the timer. You may be amazed at how much you can accomplish in 15 minutes.