I am a little over 2 weeks postop and I'm still on clears and Protein shakes per my docs plan. I will be advanced to a soft diet at week 3. So for now I find it easy for me to digest Jello, broth, sf popsicles are awesome because I can actually "chew", and believe it or not V8. I am on nectar protein shakes, I've had good luck with that one.
My tastes did change to a certain degree. I'm lucky so far, I can tolerate eating my limited menu but I really don't like flavors that I once did. Plus I have no desire for sweet "foods". I would suggest buying a variety of foods to try but don't go overboard unless there are others in your house that will eat them.
I think also what has helped me do so well so early on is walking. I was walking for 30 min a day since the day I got home. I wasn't getting far distance wise in the beginning, but now I'm up to just under 2 miles in 30 minutes. You don't have to go crazy, just move, you're body will tell you if you're pushing yourself too much.
The first couple of days in the hospital were rough, and I wondered for days what the heck did I do to myself. Even at this point in my journey I feel great, and I'm glad I made the decision to do this. But don't get discouraged, I think feelings of regret are normal. Good luck with you're upcoming surgery!