How far out are you from surgery? I love baking, and I don't use recipes, so I check a lot by tasting batters and such. While I have adjusted a lot of recipes so that I can also share in them, a lot of those changes do not taste right as batter, and then when I bake for others, there is usually too much sugar for me to taste as I normally would. It took some time to get used to the changes and enjoy my baking process again. It also took time to adjust to the amounts I can eat. I indulged in a single of my all time favorite Christmas cookies - and I took hours to finish it because it was full sugar. It was awesome to savor every different bite, instead of inhaling 20 cookies and barely tasting them. The change in relationship to food is difficult to get used to, but you will be able to find joy in it again.