I'm having one of those days myself Kalmika - just thinking and typing is a challenge today.
I guess I'm lucky that I don't usually have more than one really bad day at a time (rarely it will stretch to 3-5 days) so I try to rely on prep from other days. I try to focus on very simple healthy food, nothing complicated. Lots of my meals are a single vegetable. Chard lightly boiled as a soup, cauliflower roasted (riced with cabbage if I have energy, topped with other veggies if I'm having a great day), green smoothies which I make 2 days of at a time. I'll just throw a bag of thawed frozen vegetables in a blender and call it soup for a week. lol. I just try to make sure that I get the veggies and the other things I want in my diet first in whatever form I can manage. On really bad days I often feel nauseous and I'm not much up to eating anyway - I just try to respect a day of rest for my body knowing that tomorrow I'll likely be able to get back to eating well.
If you have some people who can help with meal prep could they bring you lots of soups and smoothies - things that you could just store in mason jars in the fridge and that are easy to grab. Adding chia to some left over smoothie makes a really lovely pudding too if your in the mood for some comfort food.
Self care is tricky. I'm busy most of the time trying to cope and be normal. I try to find time for some yin yoga if I can as it helps me get in touch with my body where it is right now although that's not really an option on bad days. Lots of detox baths, even short ones. Then I just try to remember that 'this too shall pass' and not get too down on myself. Getting outside is wonderful too.
Looking forward to other's thoughts.
Bulls eye rash August 2013
Started treating with Buhner herbs July 2017
Treating Borellia, Babesia and Bartonella as of November 2017