Ooh, sorry to hear about your stomach troubles...
It sure is a short list to choose from, but even here you can build a delicious meal plan until your doctor allows you to try some different foods. To lose weight you should measure your portions well and calculate your daily calorie and nutrient (carbs/protein/fat) needs. Here are some ideas:
Rice pudding for breakfast - boil sticky rice with almond or coconut milk, eat with coconut yoghurt and blueberries. Blueberries are a natural stomach medicine and the carb load you get from rice will be used by your body during the day.
For lunch potato mash with some herbs such as rosemary or thyme or basile or mint (if your doctor allows them) and carrot juice mixed in. If you can eat carrot juice then you can probably eat carrots too. Boil potatoes and carrots together and mash them. If you want a craemy mash, mix in some almond and coconut oil.
For dinner eat broth.
Other than that, I can already see some nice smoothie combinations in your list
(for example blueberries + almond milk) Play around and see what works for you.