Congratulations on the paper!
When there is there is so much on my plate and I get really wrapped up in things, I have a hard time focusing. As hard as it is with SO much going on and it seems contrary, but it is so important to make some time for ourselves. I don't know if you are already doing this but please consider it if not. Whatever that might mean for you, but for example for me it is: baths, walks/runs, listening to music, read a novel, to make a nice meal, a movie, something with my partner, etc... Even if it is just a few stolen minutes here and there, but to take the time. I have to do this because in not taking the time to decompress, it makes things worse. It is actually proven to help by giving yourself some time away from things: it can improve your ability to focus when you come back to it, decreases stress levels, and increases productivity.
As I mentioned, you may already be doing this but in case not, please consider it. With so much on our plates, I know how easy we can overlook ourselves in the process. Please take good care. Sending the best of wishes and hang in there.