I would consider this if Edan already hasn't completely turned his nose up at the TOTW. He sniffs it and backs away.If I want to go with a higher protein food, I'm going to have to try something else.
I may consider throwing the back of TOTW on Craig's List or Freecycle. The shelters around here won't take an already open bag of food.
I would say keep the food for a little while. Get a small bag of the salmon flavor (slightly lower protein) and try to transition to that. Mix the pumpkin with it and see what happens. The different smell might throw her off. I started with the salmon without issue (Pierre has a sensitive stomach and I wanted a lower protein for Duncan) and can now switch between all their flavors.

