Certainly nothing wrong with complex carbs and fibre. Just be aware of what is missing from your normal diet. You run the risk of missing certain vitamins minerals and other nutrients if you fill up on a particularly narrow number of foods. Liquid iron and supplements can be helpful, but nothing beats a balanced diet, especially now.

An EXTREMELY common trap (me too) is "I can afford to lose a few pounds I'll pick it back up later." It doesn't work that way. There is a lot of repair work going on behind the scenes, and if you don't have the fuel you will make your recovery longer and more difficult. Its not easy when everything tastes bad but you have to find a way to win that battle in your head and get the nutrition in. Stick with it you're doing great for this stage.