
Hi Alison,
Yes, cutting the food down to match the reduced exercise seems just the right thing to do. Poor Bob, I bet he's fed up - my boy hurt his toe last year and went through months of minor ops and bandages etc so I know how you both feel! I was very glad that neither he nor any of the other dogs took any notice of his bandage so the lampshade wasn't needed. (I tried one on another of them before, and all the others went completely bananas and teased her something rotten, so now I spend 24/7 with injured parties if necessary to stop scratching/chewing etc at dressings or stitches.)
If Bob is two-and-a-bit, then he's about through his adolescence, so the digging isn't down to puppy or teenage naughtiness.....he's a puzzle :). Perhaps the lack of exercise is causing him boredom and so he's just finding things to do? If it's that, then more (slow) walks on the lead would give him something else to think about till he can get free exercise again.
Keep smiling! :)