Thank you for the advice! I did ask the vet about walks and she said walks are fine, but no fetch, running, etc. And tomorrow was the day she was going to get vaccination freedom and get to do a lot of running.
Oh well, there will be time for that. I was thinking maybe a lot more walks than usual but for shorter time. We have a game where she can push wooden blocks around for treats. She figured it out, but she also figured out the wooden blocks were way more interesting than the treats! Maybe I'll take a trip to the pet store tonight and see what they have in the way of puzzles that don't require treats as rewards, since we have to limit her food. I think you're right, she deserves new toys to recuperate with.