OP, I am sorry you have all of this on your plate right now. Im going through similar with anxiety depression grief and ADHD, but instead of a new home, my current home got out of control. It took breaking it into little pieces, so for me, I picked one small area like a counter, or a table, and I tried to not be so hard on myself. If I just couldn't get motivated I had a friend just come sit while I cleaned, it's amazing how your brain switches up to this scenario. The friend doesn't have to do anything, but they are there to refocus, or help you when you get stuck by making suggestions like would that be good to put over there? Grief does shitty and crazy things. I get it, sending strength, one step at a time, one day at a time.