Hi Mama,
While I don't have experience with your medical issues, I made all of my first daughter's baby food. It tasted just like the real thing because I didn't have to process it for long term storage.
Bananas, avacados and hard-cooked egg yolks are soft enough to mash with a fork, no extra work needed. Add a little extra liquid if you need a smoother texture.
Soft, watery fruits like pears or melon can go in your blender or food processor. If you need things to be ultra smooth (like stage 1 baby food), you can press the mixture through a mesh strainer after you blend it to remove any leftover lumps or seeds.
Harder fruits (apples, less than ripe stone fruits) can be steamed for a few minutes to soften them, then blend.
Roast or steam veggies until soft, then blend. Add extra liquid (water, broth or milk, depending on your taste) to help smooth the texture. Watery veggies, like squash or zucchini, need very little liquid, if any. Stringy or hard ones, like asparagus or carrots, need more. Just go a little at a time. And until you get the texture right. I used a lot of frozen veggies, too.
Some work best in combination. Sweet potato and cauliflower or broccoli was pretty good, as was regular potatoes with spinach.
Meats are a little tougher, because the texture can be rough. Try combo meals for them. My daughter loved a beef stew that was cooked in the oven until it everything was soft and falling apart then pureed. Mixing chicken with root vegetables or pasta worked well. Lentils and bean soups work very well, too. Again, because I used fresh ingredients and prepared everything like I would cook for myself, only the texture was different, not the taste.
I would make big batches and freeze them in ice cube trays. After they were frozen, I'd pop the cubes into a ziplock bag. Each food cube is about 2 Tablespoons. It made them easy to thaw and measure serving sizes.
Finally, check out your library for baby food cookbooks. Annabel Karmel has some great ones for "meals" that puree well, including recommended liquid amounts. Super Baby Food is a great resource, and has a lot of good recipes, but it is organized poorly, and the author is vegetarian, so meat ideas are limited.
Best wishes for your health!