Hi Lar,
I encountered the same thing while taking care of my mother after her hip surgery. I was just exhausted everyday, and I couldn't understand why. She really did not need a great deal of personal care, and I had a lot of free time. But just being around her so much, and being in a caregiver role (again) triggered emotional stuff I was not aware of in the moment. That is really draining, you're right.

What helped me get through was making sure I had some time to myself, emailing with dear folks who have come to be precious friends, and laughing a lot. Oh, and I planted a patio garden while I was there. I did that for me, not for my mom. Which was a good thing, because she really didn't seem to appreciate it the way I did. Sigh.

I really respect that you are stepping up, though. Family is a very important thing to me, even if it comes with costs.

Take care,

gg