I’m sorry to hear you have MCTD. I was diagnosed several years ago. I also have Rheumotoid Arthritis, which I never know which is hitting me, MCTD or RA, such simulair symptoms. Slowing your self down is NOT easy. Wow! I use to be SO active, you could not hold me down, it’s all changed now, the disease has me down. Lot’s of rest is key, eating right and a good doctor! Good luck and keep in touch.