At least try to get someone to sit with your for that part. You may have to make decisions, but someone else could carry things, box them, call places to say their pile is ready, bring you snacks and tissues, etc. It's not a good job to do alone, just for emotional reasons.

If we weren't having a pandemic, I'd be all over that idea. Lots of distancing around here. I have crappy lungs and the people volunteering to help are all in the endangered age group. Someone did make me muffins which were very tasty and someone else took an item to donate that was too big for my car. I may ask her to do the same with some other stuff. I can put it in the driveway like I did the other item.