@NolaMel you are making the right decision. It's so hard when a pet is nearing the end. Our big dog was so miserable by the end. There was nothing she loved more than being active and she just didn't get she couldn't and was injuring herself constantly and we couldn't keep her comfortable anymore and there are times you know it is time.
I am well, pro person anesthesia (I realize that's not the most popular stance) but with pets.... It's impossible, because they don't know or understand. I often find it crueler to the pet to make it stay past the right time, because they don't get a single thing about why they feel so bad. My thoughts will be with you today. No one ever wants to make that decision but I am so glad your vet can come to the house, it is so much the best way.
Anna