I could manage my food well early on. I used to have tomato soup with a piece of corned beef in. As you warm it, the meat softens right up and it's a fab source of protein. I made red lentil, bacon and tomato soup, very well blended - another great source of protein!
As you move on - If I made the family a roast dinner, I blended the meat then the veg, took out my portion size then froze the rest in ice cube trays. That way you only defrost a couple of cubes - 2 meat, 2 veg or 1 of each. Just remember you may need to add more gravy to help it go down.
I never bought any protein drinks, complan soups or anything like it. Maybe I was lucky with my recovery. Just make sure your protein is high to aid your healing.
Good luck!