This is a hard one for you. And, it sounds like you already know it would be difficult for the doggie.
Is there anyone in the area, retired and active who would perhaps like to earn just a little money (to pay for a luxury or something)? When I worked full time, we had a lovely lady living on the estate aged 67.............I used to give her just £10 a week(and as she said, it paid for her paper each day, and chocolate), and she would just come half way through the day, make herself a cuppa, play with Lily...........then take her to the local field for a run. Luckily, I didn't work full-time for too long, so I got to do it myself eventually. Sometimes it not vast amounts of money these people are looking for, but it is nice for them to do something, and to have a bit of spare cash for a luxury too.
I have you find a way to get around the problem. I feel for you.